Celebs You Forgot Guest Starred On NCIS

"NCIS" is one of the most-watched crime shows on television, having captivated audiences from around the globe ever since the series debuted on CBS in 2003. The show's 19th season began airing in September, and fans as well as the "NCIS" actors and showrunners already can't stop talking about the newest season. "What we're trying to focus on right now is telling the best stories we can with the characters we have — and Gibbs is a part of that world," showrunner Steven D. Binder told TVLine of Mark Harmon's character's fate after a quite literal explosive Season 18 finale, adding, "And I think we're doing a pretty good job with that."

While "NCIS" has seen a handful of cast shakeups over the years — stars Pauly Perrette, Michael Weatherly, Cote de Pablo, Maria Bello, and Emily Wickersham all exited the show for various reasons — there has always been a steady stream of guest stars rotating in and out of the series, including some of the most recognizable names in Hollywood.

Jamie Lee Curtis

Hollywood legend Jamie Lee Curtis had a multi-episode stint on "NCIS" in 2012. Curtis took on the role of Dr. Samantha Ryan for five episodes — something that star Mark Harmon, who has appeared in over 400 episodes since the show's premiere in 2003, was incredibly grateful for. "She's terrific," Harmon raved about the iconic actress (via Outsider). "I've known Jamie a long time. She's a treat to have on set. The rest of the cast loves her and Gary Glasberg has created a role for her that made her want to come and play in the first place, which is rare. But she's had a great time there and I think she'd tell you that as well."

The "NCIS" star went on to call Curtis "a gift," adding that it was fun to act out the friction between their characters. "[She's] such a rare talent, and as a person, a good person and terrifically good at what she does," Harmon continued. "So, we've enjoyed having her." Harmon and Curtis actually starred together in 2003's "Freaky Friday" as well, so her appearance on the show was a bit of reunion (via Entertainment Weekly). 

After Curtis' 2012 "NCIS" stint, the seasoned actress went on to star in "Scream Queens," "Halloween," "An Acceptable Loss," "Knives Out," "Senior Entourage," and "Halloween Kills," and also had a six-episode stint on "New Girl," in which she played Zooey Deschanel's character's mom.

Millie Bobby Brown

Millie Bobby Brown may be one of the most well-known teen actresses of her generation thanks to her breakout role in the hit Netflix original series "Stranger Things," but you probably didn't realize that Brown had a few acting gigs before landing the role of Eleven in the beloved nostalgic sci-fi series. One of those guest starring roles includes a one-episode gig on "NCIS" in the episode titled "Parental Guidance Suggestion," which aired during Season 6 in 2014. In the episode, Brown portrays Rachel Barnes, the daughter of Navy SEAL Ryan Barnes, whose wife, psychologist Dr. Valerie Barnes, was found murdered in their home.

Just two years later, Brown landed the role of a lifetime when she was cast in "Stranger Things." Since then, she has gone on to star in "Godzilla: King of the Monsters," "Enola Holmes," and "Godzilla vs. Kong," and has multiple projects in pre-production, including "Enola Holmes 2" and "The Girls I've Been."

Colin Hanks

Colin Hanks, who clearly caught the acting bug from his ultra-famous father, Tom Hanks, has a seriously impressive resume when it comes to his successful career in Hollywood. In 2013, the actor landed a three-episode stint on "NCIS," portraying the character of Richard Parsons in the episodes titled "Whiskey Tango Foxtrot," "Damned If You Do," and "Double Blind." Executive producer Gary Glasberg described Hanks' character as "Ken Starr, J. Edgar Hoover and an angry pit bull wrapped into one" (via TVLine). He was undoubtedly excited to work with the accomplished actor, saying at the time that Hanks' guest starring role on the long-running crime drama "should make it a truly memorable finale."

In addition to his role on "NCIS," Hanks has starred and guest starred in a plethora of notable films and TV shows throughout the years, including the original "Roswell," "Orange County," "King Kong," "The House Bunny," "Mad Men," "Dexter," "Burning Love," "Fargo," "Life in Pieces," and "American Crime Story." 

Jon Cryer

Jon Cryer may be best known for his starring role on the long-running Chuck Lorre sitcom, "Two and a Half Men." However, Cryer has a seriously impressive list of acting credits to his name, having appeared in over 70 films and TV shows since he started acting in the '80s. Shortly after "Two and a Half Men" came to an end, Cryer landed a three-episode guest starring role as Dr. Cyril Taft on "NCIS" in 2015 and 2016. His character provided much-needed comic relief on the show (via CBS).

"I've loved that show from the first season when nobody believed me that it would be a hit," Cryer told Entertainment Tonight ahead of the Season 13 premiere. "I save Mark Harmon's life on the show. He was shot in the chest and you need a heart surgeon, and the heart surgeon you need looks a lot like this."

Troian Bellisario and Patrick J. Adams

Troian Bellisario rose to A-list fame after she landed the role of Spencer Hastings on the beloved teen mystery/drama/thriller series, "Pretty Little Liars," but before her big break, the 35-year-old actress had a handful of guest starring roles on television shows like her two-episode stint on "NCIS" as Sarah McGee in 2005 and 2006. Bellisario's father, Donald, is actually one of the co-creators of the show, and another series cast member, Sean Murray, is Donald's stepson and Troian's stepbrother.

Troian's husband, "Suits" star Patrick J. Adams, also had a guest starring role on "NCIS" in 2008. However, the pair didn't actually meet until the following year when they starred in a play together and becoming close friends on set. In 2010, the couple finally got together. "We did a play together in L.A. called 'Equivocation,'" Adams told Her World in March 2013. "She was cast for the part of my romantic interest. We met and that was it."

Danica McKellar, Patrick Duffy, and Jaleel White

Danica McKellar, Patrick Duffy, and Jaleel White were some of the most popular actors in the '80s and '90s thanks to their starring roles on some of the most iconic shows of all time. McKellar notably played the role of Winnie Cooper in "The Wonder Years," while Duffy had leads in "Dallas" and "Step By Step." And of course, who could ever forget White's role of a lifetime as Steve Urkel in the fan-favorite sitcom, "Family Matters"? While all three actors went on to have successful careers of their own across different film and TV genres, the three of them are all connected through one thing: Guest starring on "NCIS" episodes.

McKellar appeared as Erin Kendall on the "NCIS" episode titled "Witness" in 2005. A decade-and-a-half later, Duffy took on the role of Ret. Lieutenant Commander Jack Briggs in the Season 17 episode titled "Flight Plan." Then, in 2012, White portrayed Martin Thomas in the episode titled "A Desperate Man."

Taye Diggs

In honor of the milestone 300th episode of "NCIS," showrunners pulled out all the stops and tapped "Private Practice" actor Taye Diggs to play Gunnery Sergeant Aaron Davis, a Marine suffering from PTSD, for a role that executive producer Gary Glansberg called "tailor-made" for the 50-year-old actor. "For our 300th episode, we needed a guest actor who could proudly portray one of our nation's wounded warriors as well as participate in a very touching musical performance," Glansberg said in a statement at the time (via Entertainment Weekly). "This emotionally charged role is tailor-made for Taye Diggs, and we are so thrilled and honored to have him join us."

While Diggs appeared in only one episode of the long-running crime drama, he's remained exceptionally busy over the years, having starred in multiple television series like "Murder in the First," "Empire," "Muppets Now," "Ada Twist, Scientist," and "All American."

Danneel Ackles, Paul Johansson, and Jackson Brundage

Not only are Danneel Ackles, Paul Johansson, and Jackson Brundage a part of the "One Tree Hill" family, but all three actors are a part of the "NCIS" family, too.

Daneel, who is married to "Supernatural" alum Jensen Ackles, had a guest starring role on "NCIS" the same year her "One Tree Hill" run ended in 2009. The "OTH" star went on to appear in films and shows like "The Back-Up Plan," "Friends with Benefits," "Supernatural," and a handful of made-for-TV holiday movies. However, "NCIS" wasn't the first crime show she's guest starred on. The 42-year-old actress also had guest starring roles on "CSI: Miami" in 2009 and "CSI: Crime Scene Investigation" in 2007.

Johansson, who's been steadily acting since the late '80s and has appeared in productions like "Santa Barbara," "Beverly Hills: 90210," the "Lonesome Dove" series, "Highlander: The Raven," "Mad Men," and "Van Helsing," added one more acting credit to his already impressive resume after appearing in the "NCIS" episode titled "In A Nutshell" in 2020. Daneel and Johansson's young "OTH" co-star, Brundage, also showed off his acting chops on "NCIS" during the 2010 episode "Borderland."

Zac Efron

Zac Efron is now one of the most recognizable names in the industry, but before he got his big break in Disney's "High School Musical" movies, he was busy hustling like most of the young actors trying to make a name for themselves in Hollywood. In 2006, Efron guest starred on "NCIS" on the Season 3 episode titled "Deception." In the episode, he played the character of Daniel Austin, a teen who is brought in for questioning after he is caught using a phone that belonged to a Naval officer who was abducted.

Before his "NCIS" role, Efron also guest starred on an episode of "CSI: Miami" and went on to star in "Hairspray," "17 Again," "Charlie St. Cloud," "The Lucky One," "The Paperboy" opposite Nicole Kidman, the "Neighbors" movies, "Dirty Grandpa," "Baywatch," "The Greatest Showman," "Extremely Wicked, Shockingly Evil and Vile," and "The Beach Bum" — just to name a few.

Eric Stonestreet

Eric Stonestreet is best known for his role as Cameron Tucker on the award-winning television show "Modern Family," but before he rose to true Hollywood stardom, he had a slew of guest starring roles on shows like "Dharma and Greg," "ER," "Party of Five," "Malcolm in the Middle," and of course, "NCIS." The Emmy-award winning actor portrayed the character of Harvey Ames in the Season 6 episode titled "Silent Night," and just one year after his episode aired, Stonestreet landed his gig on "Modern Family." The rest is basically history.

Stonestreet also had a 13-episode stint on "CSI: Crime Scene Investigation" before his big break, and after he started filming "Modern Family," he made appearances on a wide variety of popular television shows like "American Horror Story," "Monk," and "Nip/Tuck." He's also had roles in movies like "The Loft," "Identity Thief," and "Bad Teacher," and voiced Duke in both "The Secret Life of Pets" movies.

Michelle Obama

The former First Lady is a best-selling author, mother of two, podcast host, and actress. Is there anything Michelle Obama can't do? In 2016, it was announced that Obama would grace small screens across America after CBS revealed that she'd be guest starring on an episode of "NCIS" in conjunction with "Joining Forces," a nationwide military initiative started by both the "Becoming" author and current First Lady, Dr. Jill Biden, in 2011.

"Filming inside the White House was a dream come true for the 'NCIS' cast and crew," executive producer Gary Glasberg shared (via CBS). "It was such a pleasure working with First Lady Michelle Obama, and it's our honor to support the 'Joining Forces' initiative and the military families that benefit from it."

"We've known about it for a while. It's about to celebrate its [Joining Forces] fifth anniversary," Glasberg explained to E! News. "Whenever we can do a story that supports and explains the difficulties of our military families, we embrace it and we want people to understand. This was natural for us."

Robert Wagner

Robert Wagner, a television fixture during the 1970s and '80s on such series as "Switch" and "Hart to Hart," holds a very special place in the hearts of "NCIS" fans. That's because of his recurring role as Anthony DiNozzo Sr., father of Tony DiNozzo (Michael Weatherly, who exited the series after the 13th season). In more than a dozen appearances on the show over the course of nearly a decade, Anthony Sr. became beloved by viewers, a rakish, womanizing con artist who stepped in occasionally to lend his unique expertise to NCIS investigations — or to seek his son's help in bailing him out of a jam.

The role had become a favorite for Wagner, who enjoyed the opportunity to continue exercising the comedy chops he'd used to hilarious effect in the "Austin Powers" movies. During an appearance on "The Queen Latifah Show," Wagner opened up about how much he enjoyed his "NCIS" role. "It's a real pleasure for me, and it's the best company I've ever worked on," Wagner said. 

Wagner was cast as DiNozzo Sr. on the recommendation of Weatherly, who had portrayed a younger version of Wagner in the 2004 TV miniseries "The Mystery of Natalie Wood," examining the murky circumstances involving the 1981 drowning of Wagner's late wife, Natalie Wood. "He suggested that I be his father," Wagner explained during an appearance on "The Talk," as reported by Broadway World. "I met the producers and the writers and they said, 'Yeah, let's go!'"

Ralph Waite

Another actor who played a recurring role on "NCIS" was Ralph Waite, best known for starring in long-running 1970s TV drama "The Waltons." In eight episodes of "NCIS," spanning from 2008 until 2013, Waite played Jackson Gibbs, father of Mark Harmon's NCIS chief Leroy Jethro Gibbs. "It's probably the best set I've ever worked on," Waite said of his experiences on "NCIS" in an interview for the Presbyterian Church. "And I've worked on a lot of sets."

Waite died at age 85 in 2014. As late "NCIS" showrunner Gary Glasberg wrote in a guest column for Entertainment Weekly, he'd briefly considered adding a "in memoriam" tribute to Waite at the end of an episode, but realized it wasn't enough. "Ralph deserved more. He would have wanted us to stretch, to push the story envelope, to leave people feeling the loss of Jackson Gibbs, not just reflecting on it," Glasberg wrote.

As a result, "NCIS" writers crafted a special storyline for the 11th season finale, in which Gibbs mourned his father's passing, and attended his funeral. "I think it was a fitting tribute to Ralph, and done in a very different way, and certainly for us, a different kind of season ending," Harmon told Assignment X of that unique episode. "We wanted to do this properly and say goodbye to a character that we all really enjoyed writing over the years, and goodbye to an actor that meant a lot to us," Glasberg told TV Guide.

Pam Dawber

Pam Dawber famously co-starred with the late Robin Williams in sitcom "Mork & Mindy," the series that propelled the comedian to international superstardom. Dawber is also the wife of "NCIS" star Mark Harmon, with the couple marrying way back in 1987. Having more or less retired in the late 1990s to raise the couple's children, in 2021 Dawber guest-starred on "NCIS" in a four-episode story arc, portraying an investigative journalist, Marci Warren, who clashed with Gibbs. Viewers enjoyed the real-life couple's onscreen rapport so much that Dawber returned the following season to appear in three more episodes. 

As Dawber revealed to Entertainment Weekly, she'd been approached about appearing on "NCIS" a few times over the years, but, for various reasons, it hadn't worked out. Marci, however, sealed the deal; when Harmon learned what the writers had in store for the character, he suggested producers call his wife. Dawber read the script and was blown away. "The character is so good. I just fell in love with what they wrote," she said. However, she also understood the level of pressure that accompanied acting opposite her husband on TV's No. 1 show. "And then I had anxiety like, 'Oh my God, am I going to do this?'"

Ultimately, Dawber told ET Canada, she knew that if she turned down the opportunity, she'd regret it. "I would not really be pleased with myself because I would have chickened out ... so I decided to do it," she explained.

Lily Tomlin

Lily Tomlin skyrocketed to fame in the late 1960s thanks to hippy, trippy TV comedy "Laugh In," which led her to movies (including Robert Altman's Oscar-winning "Nashville," and the classic "9 to 5"), Broadway (her Tony-winning one-woman show "The Search for Intelligent Life in the Universe"), and numerous television roles. Among the latter was a 2011 guest-starring appearance in "NCIS," in an episode titled "The Penelope Papers." 

Tomlin played the titular character, Penelope Langston. Grandmother of Timothy McGee (Sean Murray), she wound up embroiled in a case involving a murdered Naval officer. "Penelope is sharp as a tack and we're about to learn some things about McGee's family that have never been revealed," teased "NCIS" showrunner Gary Glasberg of her character, as reported by Entertainment Weekly. "She's a scientist, and she's very sharp," Tomlin said of Penelope during a panel at the Television Critics Association press tour, as reported by TV Line. "She was an admiral's wife for many decades, and she's the mother of McGee's father ... It was a really good part, and I was really delighted to get it."

One thing about her "NCIS" character that particularly appealed to her, Tomlin told Deadline, was that it dovetailed nicely with other roles she'd been embracing that broke the stereotypical mold of how older women are generally portrayed in film and television. "The young guy on 'NCIS,' I played his grandmother, and she was a very strong, capable, productive person," Tomlin explained.

Bob Newhart

 A comedy icon who starred in two distinctly different yet equally successful sitcoms — "The Bob Newhart Show," and "Newhart" — Bob Newhart made his "NCIS" debut in the series' eighth season. In the episode, titled "Recruited," Newhart guest-starred as Dr. Walter Magnus, a retired NCIS medical examiner who was predecessor of Dr. Donald "Ducky" Mallard (David McCallum). As viewers discovered, Magnus was mourning the death of his wife while estranged from his daughter, and was also grappling with having been diagnosed with Alzheimer's.

For Newhart, the character wasn't much of a stretch. "I know this guy," he told TV Guide while on the "NCIS" set. "Well, I'm getting closer to knowing this guy." In crafting his characterization, Newhart realized he had to rein in his comedic instincts without extinguishing them altogether. "I was trying to walk a line between being funny and maintaining the integrity of the show — not to have the show stop for a Bob Newhart moment," he explained. As Newhart revealed, his wife, Ginni, was a huge "NCIS" fan — although he admitted he would have accepted the offer to appear on the show even without her endorsement. "If you can pick and choose, why not go with the No. 1 drama on TV?" he quipped. 

Asked if Dr. Magnus might become a recurring one, like Robert Wagner's Anthony DiNozzo Sr., Newhart jokingly responded by referencing his character's diminishing mental faculties. "They're gonna have to hurry," he said.

Abigail Breslin

In 2004, the first episode of the second season of "NCIS" — titled "See No Evil" — featured young child actor Abigail Breslin, who played a little girl named Sandy Watson. At that point, eight-year-old Breslin already had several screen credits under her belt, but would quickly go on to far greater fame thanks to her Oscar-nominated performance in 2004's "Little Miss Sunshine," followed by subsequent movies including "Zombieland," "Maggie," and the made-for-TV remake of "Dirty Dancing."

In the episode, Breslin plays a young blind girl who, along with her mother, is abducted as part of a blackmail scheme. The kidnapper is eventually revealed to be a disgraced former Naval officer, Kyle Grayson (played by actor William Mapother, a.k.a. cousin of Tom Cruise), with the whole scheme eventually revealed to have been orchestrated by Sandy's father, Captain Mike Watson (David Keith).

Four years after her "NCIS" guest spot, in a 2008 interview with the East Bay Times, 12-year-old Breslin was asked how she decided which roles to accept and which to turn down. "I guess if it's somebody I would like to know," she said. "My mom will read [the script], then I'll read the script, and if we all like it and I want to do it, we'll say yes."

Billy Dee Williams

Billy Dee Williams is a star who needs no introduction, boasting an acting career extending back to the late 1950s that features such movies as "Lady Sings the Blues," Tim Burton's "Batman," and the iconic sci-fi role of Lando Calrissian in the "Star Wars" franchise — and who can forget his epic TV commercials extolling the virtues of malt liquor?  

In 2012, Williams made his "NCIS" debut in an episode titled "The Namesake," so called for his character's name, Leroy Jethro Moore. Moore was once the best friend of Gibbs' father until a disagreement left them estranged — but not before Gibbs' dad gave his son his friend's name. Moore landed on the NCIS team's radar when his Medal of Honor, which he'd pawned, was connected to a murder investigation. 

According to "NCIS" star Mark Harmon, Williams had actually been on the show's radar as a potential guest star for some time. "This show, over the years, has had an uncanny ability to get the people they want to get from the very beginning," Harmon said in an interview with CBS, as reported by Showbiz CheatSheet. "And Billy Dee was one of those. He was on a very short list in the beginning when they were writing that episode." Williams, in fact, became a two-timer on the show when he appeared the following season, among the mourners at the funeral of Gibbs' father, Jackson Gibbs, during the special finale episode honoring the late Ralph Waite.

Jesse Plemons

Jesse Plemons has experienced a career trajectory that can be described as meteoric. Beginning as a child actor, Plemons broke through with his portrayal of Landry Clarke in TV's "Friday Night Lights," which he followed up as hit man Todd in "Breaking Bad." Then came gripping performances in FX's "Fargo" (in which he co-starred with future wife Kirsten Dunst), Martin Scorsese's "The Irishman," and "The Power of the Dog," for which both he and Dunst earned Oscar nominations. 

Before all of that, though, Plemons guest-starred on "NCIS" in the 2006 episode "Deception." He played Jason Geckler, a teenager who sold a cellphone that had been pilfered from a female Naval officer who mysteriously vanished while in charge of overseeing a shipment of nuclear weapons. The team's investigation ultimately uncovered that her membership in a clandestine organization, dedicated to combating online pedophilia, was connected to her disappearance.

While "NCIS" was one of Plemons' numerous TV guest spots, he credits the five seasons he spent on "Friday Night Lights" for truly teaching him how to evolve a performance over the course of several years. "It was the first time I felt like I got to grow up with a character," Plemons told Interview. "There's something unique to TV where you have more time, and you don't always know what's coming."

Corey Stoll

Corey Stoll has enjoyed an enviable career in recent years, starring in a string of critically acclaimed TV series such as "Billions," "The Strain," and "House of Cards," in addition to portraying villainous Darren Cross/Yellowjacket/M.O.D.O.K. in Marvel's "Ant-Man" films.  

In 2006, Stoll appeared in two back-to-back episodes of "NCIS," as an associate of infamous arms dealer — and NCIS nemesis — René "La Grenouille" Benoit (Armand Assante). Stoll then reprised the character the following year in an episode titled "Blowback," which involved the unlikely scenario of medical examiner Ducky going undercover in an attempt to prevent a high-tech weapons system from falling into the wrong hands. 

Of the many roles that Stoll has played, ranging from his "NCIS" arms dealer to film roles and long-running TV series, he has yet to play a character resembling his actual self. "I don't know if I've ever played anybody who was really even close to me," Stoll said in an interview with Glamour. "I'm in a committed, stable, trusting marriage with really good communication. I don't think those kinds of people tend to be terribly interesting to play. The root of drama is conflict, and I happen to be very lucky to be in a trusting, loving relationship."

Misha Collins

Misha Collins made his first appearance on The CW's "Supernatural" in 2008, with the role of angel Castiel becoming a fan favorite — and Collins eventually bumped up from recurring guest star to series regular on the show. After the show's end, Collins went on to star as Harvey Dent in the network's Batman-inspired series "Gotham Knights," which ran for one 13-episode season in 2023 before its cancellation. 

‌Prior to being cast in "Supernatural," Collins appeared in a 2006 episode of "NCIS," titled "Singled Out." Collins played Justin Farris, who's seen before the opening credits driving an SUV that appears to have a bloodied woman screaming for help in the back of the vehicle, noticed by some other motorists. Farris is then apprehended and brought into NCIS HQ for questioning. Under interrogation from Gibbs, Farris admits that he ripped off the vehicle, but had no idea there was a kidnapped woman in the car — a revelation that checked out, and sent Gibbs and the team in a whole other investigative direction. 

While Collins' single guest-starring appearance on "NCIS" didn't lead to a return engagement, his "Supernatural" role could easily have followed that same path. "I just sort of saw it as another guest spot that wasn't a big deal," he told TVLine of the first time he played Castiel. "It was originally only three [episodes] and now it's amazing," he told ET of the role in a 2015 interview.

Gena Rowlands

With screen credits dating back to the mid-1950s, Gena Rowlands can boast of roles in some of television's earliest series, in addition to starring in several critically acclaimed films directed by her husband, John Cassavetes, including "A Woman Under the Influence," "Opening Night," and "Gloria," with the latter earning Rowlands an Oscar nomination. 

R‌owlands can also lay claim to being one of the numerous actors to join the "NCIS" family over the years, appearing in the 2010 episode "Mother's Day." Rowlands portrayed murder witness Joann Fielding. As viewers discovered, Joann had a unique relationship to the NCIS team, given that she was once Gibbs' mother-in-law, mother of his first wife Shannon Fielding. "One of the nice things about doing a top-rated show is that people want to do the show," "NCIS" star Mark Harmon told ET of working alongside actors of Rowlands' caliber.

Rowlands' part was a juicy one, as a woman still haunted by the trauma of her daughter's violent death, a tragic event that both binds her to Gibbs while having permanently damaged their relationship. "She's got a huge past with Gibbs, and I don't know that she's ever recovered from it, and I don't know that Gibbs has ever recovered from it," Harmon added. 

Drew Carey

Drew Carey began his career in standup comedy before bringing his persona to TV for the hit sitcom "The Drew Carey Show." In 2007, he made a move that few of his fans saw coming when he was tapped to replace Bob Barker as host of CBS game show "The Price Is Right." 

Carey stepped out of his comfort zone when he guested in a 2018 episode of "NCIS." In the episode, "Handle With Care," Carey played John Ross, a now-retired Marine who sent care packages to troops on active duty overseas. When a Marine stationed in Spain dropped dead after eating cyanide-laced cookies from one of Ross' parcels, he becomes the prime suspect (spoiler alert: he was framed).

Guest-starring on "NCIS" fulfilled Carey's long-held dream of showcasing his abilities as a dramatic actor. In an interview with CBS Mornings, Carey revealed that he'd been semi-retired since the end of his sitcom, but was eager to stretch as an actor. "And then I'd been taking acting lessons, and thought, maybe I'll do little small parts in movies, independent movies and stuff," he explained. When his agent called about an offer from CBS, Carey figured those lessons were about to pay off. "I was like, 'Oh, maybe they want me for 'CSI' or something like that,'" he said. "And when he said 'Price Is Right,' that was the opposite of what I was thinking."