When A Familiar Face Suddenly Took Over The Show
The 1990s were ridiculously good at the surprise guest star. Movie legends, comedians, musicians, and future superstars would wander into a sitcom or drama for one episode and completely change its energy. Sometimes they were there for a quick joke. But other times, they delivered performances fans are still talking about decades later.
Screenshot from Homicide: Life on the Street, NBC Productions (1993-1999)
Robin Williams - Homicide: Life On The Street
Robin Williams deliberately dialed down the manic comedy for 1994’s “Bop Gun,” playing Robert Ellison, a tourist whose wife is slain during a family trip to Baltimore. His grief gives the episode an uncomfortable realism that helped show what Homicide could do outside its regular detective stories. Williams earned an Emmy nomination, and the episode became one of the show’s defining early hours.
Screenshot from Homicide: Life on the Street, NBC Productions (1993-1999)
Marlee Matlin - Seinfeld
Marlee Matlin played Laura, a deaf lineswoman whom Jerry dates in “The Lip Reader”. George immediately realizes that Laura’s lip-reading ability could potentially help him spy on a woman he suspects of lying to him. Naturally, the plan collapses because lip reading isn’t nearly as foolproof as George assumes. Matlin’s sharp comic timing made the episode more than a one-joke premise and earned her an Emmy nomination.
Kathy Bates - 3rd Rock From The Sun
Kathy Bates guest-starred as Charlotte Everly, a wealthy woman Dr. Solomon meets while attempting to mingle with high society. What begins as another of his attempts to understand human behavior quickly becomes a showcase for Bates, who plays Charlotte with exactly the right combination of sophistication and comic strangeness. Her performance earned a 1999 Emmy nomination, putting her alongside the many heavyweight actors the series somehow convinced to join its alien chaos.
Ewan McGregor - ER
Just as Trainspotting was turning Ewan McGregor into an international film star, he appeared on ER in “The Long Way Around”. McGregor plays Duncan Stewart, one of two robbers who take over a convenience store while Carol Hathaway is inside. The episode spends much of its running time trapped in that single location, allowing McGregor to move from frightening to frightened as the situation becomes increasingly desperate.
Screenshot from ER, Constant c Productions Warner Bros. Television (1997)
Tom Selleck - Friends
Tom Selleck could easily have been distracting stunt casting, but Richard Burke quickly became one of Friends’ most convincing romantic characters. His relaxed chemistry with Courteney Cox helped sell Monica’s relationship with a man considerably older than her, while Richard’s friendship with her parents complicated everything. Selleck was so effective that Richard remained a real emotional risk to Chandler years after his original romance with Monica ended.
Screenshot from Friends, Productions in association with Warner Bros. Television (1994)
David Warner - Star Trek: The Next Generation
David Warner’s Gul Madred only appears in the two-part “Chain of Command,” but his interrogation of Captain Picard became legendary. Madred tries to break Picard physically and psychologically, demanding that he insist there are five lights when only four are visible. Warner and Patrick Stewart turn a simple interrogation room into a brutal duel of wills. Remarkably, Warner later said he took the role on only three days’ notice and relied on cue cards during filming.
Screenshot from Star Trek: The Next Generation, Paramount Network Television (1987)
Tracey Ullman - Ally McBeal
Tracey Ullman arrived as therapist Tracy Clark and immediately seemed like she had been designed in the same strange laboratory as Ally McBeal. Tracy’s therapy methods are blunt, bizarre, and often more theatrical than reassuring, which makes her a surprisingly good match for Ally’s neuroses. Ullman could make even the strangest David E. Kelley dialogue sound natural, and the performance won her the 1999 Emmy for Guest Actress in a Comedy Series.
Screenshot from Ally McBeal, 20th Century Fox Television (1997)
Peter Boyle - The X-Files
Peter Boyle’s Clyde Bruckman could see how people were going to meet their end, but he was less spooky psychic than exhausted man burdened by too much knowledge. “Clyde Bruckman’s Final Repose” let Boyle move between deadpan comedy, loneliness, and genuine sadness without ever making the character sentimental. He won an Emmy, while writer Darin Morgan also took home one for the episode.
Screenshot from The X-Files, Fox Broadcasting Company (1993–2018)
Elizabeth Taylor - The Simpsons
Maggie Simpson spent years communicating through a pacifier, so when she finally spoke, the producers went big. Elizabeth Taylor provided Maggie’s single word at the end of “Lisa’s First Word”: “Daddy”. Taylor reportedly had to record the tiny line multiple times before the producers got exactly what they wanted. It lasts only seconds, but hiring one of Hollywood’s biggest legends for one baby word is peak early-Simpsons confidence.
Screenshot from The Simpsons, 20th Television (1989-)
Jon Voight - Seinfeld
George is thrilled when he believes he has purchased Jon Voight’s old Chrysler LeBaron, partly because owning a celebrity’s used car sounds like exactly the sort of status symbol George would value. Evidence quickly starts falling apart, including the inconvenient discovery that the previous owner may have been a completely different Jon Voight. The actual actor finally appears, bites Kramer on the arm, and somehow makes the entire mystery even stranger.
Movieguide®, Wikimedia Commons
Carol Burnett - Mad About You
Casting Carol Burnett as Jamie Buchman’s mother was almost unfair to everyone sharing scenes with her. Theresa Stemple is emotional, interfering, enthusiastic, and capable of turning a normal family situation into something enormous. Burnett brought decades of sketch-comedy experience to the role without making Theresa feel like a recycled character. She won an Emmy in 1997 and returned often enough to become part of the show’s extended family.
Screenshot from Mad About You, TriStar Television (1992), Modified
Stephen Hawking - Star Trek: The Next Generation
Stephen Hawking achieved something no other person could claim: he appeared as himself in Star Trek while playing poker with holographic versions of Albert Einstein and Isaac Newton. Data creates the gathering in the 1993 episode “Descent,” leading to a wonderfully strange discussion among some of history’s greatest scientific minds. Hawking was reportedly a genuine Star Trek fan, making the cameo feel less like stunt casting and more like science fiction folding back into reality.
creenshot from Star Trek: The Next Generation, Paramount Network Television (1987), Modified
Julia Roberts - Friends
Julia Roberts arrived on Friends at the height of her movie-star fame as Susie Moss, a former classmate Chandler once humiliated in school. Chandler thinks he has somehow lucked into a romance with her. Susie has something else in mind. Her elaborate revenge eventually leaves him trapped in a restaurant bathroom wearing almost nothing, giving Roberts the chance to play charming, flirtatious, and wonderfully vindictive.
Screenshot from Friends, Productions in association with Warner Bros. Television (1994)
John Larroquette - The Practice
Anyone expecting Dan Fielding from Night Court got a shock when John Larroquette appeared as Joey Heric. Heric is wealthy, charismatic, funny, and deeply unsettling, repeatedly finding himself accused of murdering his male lovers. Larroquette makes him charming enough that you briefly understand why people underestimate him. The performance won him the 1998 Emmy for Guest Actor in a Drama Series, adding to the four he had already won for Night Court.
Screenshot from The Practice, 20th Century Fox Television (1997), Modified
Johnny Cash - The Simpsons
After Homer eats an extremely powerful Guatemalan insanity pepper, he wanders into a surreal desert and encounters a mystical coyote voiced by Johnny Cash. That voice does most of the work. Cash makes the Space Coyote sound ancient, calm, and vaguely amused as he tells Homer to find his soulmate. The appearance is brief, strange, and perfectly cast.
Christine Baranski - Frasier
Christine Baranski played Dr. Nora Fairchild, a radio psychologist whose aggressively judgmental advice makes Frasier increasingly uncomfortable. Nora is intelligent, polished, and completely willing to humiliate callers, so naturally she becomes popular. Baranski attacks the role with icy confidence, giving Kelsey Grammer an opponent who can match Frasier’s ego without breaking a sweat. Her performance earned her an Emmy nomination in 1999.
Screenshot from Frasier, Paramount Television (1993)
George Clooney And Noah Wyle - Friends
This cameo could only have happened quite this perfectly in mid-1990s NBC. With ER becoming a sensation, George Clooney and Noah Wyle appeared on Friends as doctors Mitchell and Rosen, whom Rachel and Monica meet at the hospital. They aren’t literally their ER characters, but audiences absolutely understood the joke. Seeing two of NBC’s hottest new stars walk into another Thursday-night hit felt like a tiny crossover event.
Screenshot from Friends, Productions in association with Warner Bros. Television (1994)
Mel Brooks - Mad About You
Mel Brooks fit beautifully into Mad About You as Uncle Phil Buchman, Paul’s hilariously eccentric relative. Brooks didn’t soften his comic personality for the sitcom. He made Phil theatrical, unpredictable, and just disruptive enough to throw every scene off balance. The role became a recurring favorite, and Brooks won three consecutive guest-actor Emmys for playing him during the late 1990s.
Screenshot from Mad About You, TriStar Television (1992), Modified
Dustin Hoffman - The Simpsons
“Lisa’s Substitute” gave The Simpsons one of its earliest genuinely emotional episodes, thanks largely to Dustin Hoffman’s Mr Bergstrom. The substitute teacher recognizes Lisa’s intelligence and treats her with a seriousness she rarely gets from the adults around her. Hoffman was credited as “Sam Etic,” but his warm, understated performance was hard to disguise. Mr Bergstrom’s brief presence ends up meaning more to Lisa than plenty of recurring characters.
Screenshot from The Simpsons, Fox (1989–)
Patti LuPone - Frasier
Patti LuPone’s Aunt Zora does not enter a room quietly. She storms into the Crane family’s Greek reunion with the emotional force of an entire stage company, still furious over an old family feud involving Frasier’s late mother. LuPone understands that subtlety would be completely wrong for Zora, so she goes huge. The performance turns “Beware of Greeks” into one of the show’s loudest family disasters and earned her an Emmy nomination.
Screenshot from Frasier, Paramount Television (1993)
Larry Thomas - Seinfeld
Larry Thomas needed one episode to become part of the Seinfeld vocabulary forever. As Yev Kassem, better known as the Soup Nazi, he treated ordering lunch like an army procedure and banished customers for tiny mistakes. The character was ridiculous but played with absolute seriousness, which made every confrontation funnier. Thomas even earned an Emmy nomination for a role most sitcom actors would have treated as a throwaway gag.
Screenshot from Seinfeld, Sony Pictures Television (1989–1998)
Lily Tomlin - Homicide: Life On The Street
Lily Tomlin showed a far darker side in her Homicide guest appearance. Audiences who primarily knew Tomlin as a groundbreaking comedian got to see just how quietly effective she could be in serious drama. She resisted turning the part into a showy “comedy star goes dramatic” showcase, which helped make the performance convincing. The role earned her a 1996 Emmy nomination.
The Washington Post, Getty Images
William Shatner - 3rd Rock From The Sun
William Shatner was already perfect casting as the aliens’ mysterious superior, the Big Giant Head. Then 3rd Rock added a wonderfully nerdy joke. Shatner’s character complains about seeing something frightening on an airplane wing, and John Lithgow’s Dr. Solomon says the exact same thing happened to him. Both actors had famously starred in different versions of The Twilight Zone story “Nightmare at 20,000 Feet”. Shatner earned an Emmy nomination for the role.
Screenshot from 3rd Rock from the Sun, NBC (1996-2001), Modified
Robin Williams And Billy Crystal - Friends
Robin Williams and Billy Crystal barely needed a plot. The two suddenly appeared in Central Perk at the beginning of “The One with the Ultimate Fighting Champion,” with Williams loudly accusing Crystal’s character of sleeping with his wife. The sequence was reportedly largely improvised, which explains why the regular cast looks like they’re trying not to break. Then the two leave, and the episode simply continues.
Screenshot from Friends, Productions in association with Warner Bros. Television (1994)
Keith Hernandez - Seinfeld
Keith Hernandez’s appearance starts with Jerry developing what looks suspiciously like a crush on his new friendship with the Mets star. It then spirals into Elaine dating Hernandez and Kramer and Newman accusing him of spitting on them after a baseball game. Their account becomes an elaborate parody of the JFK “magic bullet” theory, complete with physical reenactment. It’s one of the show’s best examples of building total nonsense around a real celebrity.
Screenshot from Seinfeld, Castle Rock Entertainment (1989)
John Cleese - 3rd Rock From The Sun
John Cleese was practically engineered for the controlled absurdity of 3rd Rock From the Sun. As Dr. Liam Neesam, he initially appears to be an eccentric professor before revealing that he is also an alien, one with plans that put him at odds with Dr. Solomon. Cleese plays the character with absolute intellectual superiority, making his eventual descent into increasingly ridiculous behavior even better. His performance earned an Emmy nomination.
John Manard from Richmond, VA, USA, Wikimedia Commons
Michael Jackson - The Simpsons
For years, Michael Jackson’s involvement in “Stark Raving Dad” had an extra layer of mystery because he was credited as John Jay Smith. Jackson provided the speaking voice of Leon Kompowsky, a large white man who believes he is Michael Jackson, while Kipp Lennon handled Leon’s singing. The bizarre premise becomes unexpectedly sweet, especially in Leon’s scenes helping Bart make up for forgetting Lisa’s birthday.
Screenshot from The Simpsons, 20th Century Fox Television (1989)
Marsha Mason - Frasier
Sherry Dempsey is exactly the sort of woman Frasier and Niles would find unbearable: loud, affectionate, unpretentious, fond of banjo music, and completely comfortable being herself. That is precisely why Martin likes her. Marsha Mason makes Sherry more than a punchline by giving her real warmth beneath the personality clashes. Viewers understood why Martin enjoyed being around her even while his sons practically crawled out of their expensive sweaters.
Screenshot from Frasier, Paramount Television (1993)
Isabella Rossellini - Friends
Ross creates a laminated list of celebrities Rachel has agreed he can sleep with if the impossible opportunity arises. Then he removes Isabella Rossellini from the list because she supposedly isn’t “international enough”. Naturally, Rossellini herself walks into Central Perk shortly afterward. Her amused, increasingly confused performance makes Ross’s attempt to explain the laminated-list rules even more humiliating than it already was.
Screenshot from Friends, Productions in association with Warner Bros. Television (1994)
Bette Midler - Seinfeld
Bette Midler plays herself in “The Understudy,” and Seinfeld treats her celebrity with exactly the amount of respect you’d expect: almost none. George injures her during a softball game while charging home plate, leading New Yorkers to believe he deliberately sidelined her so Jerry’s girlfriend, her understudy, could take over. Midler throws herself into the silliness, even receiving some very special hospital care from Kramer.
Screenshot from Seinfeld, Castle Rock Entertainment (1989)
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