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Cast of the debut season (ABC, 1978–79). From left to right: (back) Marilu Henner, Judd Hirsch; (front) Andy Kaufman, Jeff Conaway, Randall Carver, Danny DeVito, Tony Danza

Cast of the final season (NBC, 1982–83). From left to right: (back) Kaufman, Carol Kane, DeVito, Hirsch; (front) Danza, Henner, Christopher Lloyd

• Alex Reiger (Judd Hirsch) – Alex is the main protagonist in the sitcom, the compassionate, level-headed core of the show; the one everyone else turns to for advice. At one point, he reveals his anxiety with this unwanted burden. He once worked in an office, with a good chance of advancement, but lost this job owing to his refusal to follow the company line. He was married to Phyllis Bornstein (Louise Lasser), and when she divorced him because of his lack of ambition she sought sole custody of their baby daughter, Cathy (Talia Balsam). He gave in rather than fight it. He is estranged from his lothario father, Joe (Jack Gilford), but has a closer relationship with his sister, Charlotte (Joan Hackett). Alex is a recovered compulsive gambler, although he relapses in one episode. A deadpan cynic, he has resigned himself to driving a cab for the rest of his life.
• Robert L. "Bobby" Wheeler (Jeff Conaway) (1978–1981, recurring 1981–1982) – Bobby is an optimistically naive, struggling actor whose flamboyance is Louie's favorite target. Robin Williams was considered for the role, but he was already committed to Mork & Mindy.^[1] Success as an actor eludes Bobby. He is signed by a famous manager, but it turns out she only wants him as a lover, not a client. Later he is cast in the pilot for a soap opera, but his part is recast when the series goes into production. Conaway left the show at the beginning of Season 4, returning for a guest appearance in which his character leaves the taxi company for good. Writer Sam Simon explained later that when Conaway was absent for an episode, his dialogue was successfully reassigned to other cast members, which made the producers realize that he was expendable.^[2]
• Louie De Palma (Danny DeVito) – Louie is the main antagonist of the sitcom. The head dispatcher of the Sunshine Cab Company and supervisor to the cab drivers, Louie spends his time holding court inside the caged-in dispatch office at the garage, arguing with, belittling and bullying the drivers. He not only lacks morals, he is openly proud of his misdemeanors and outright crimes. Louie will do anything to benefit himself, from taking advantage of a drunken friend of his on-again, off-again girlfriend Zena Sherman (played by DeVito's real-life wife Rhea Perlman), to gambling with a young boy, to stealing from the company, to spying on Elaine while she is changing. He lives with his mother (DeVito's real mother, Julia, in two episodes). On some occasions he helps his workers, as in the episode in which a cruel hairstylist (played by Ted Danson) gives Elaine a garish makeover just before a very important event, it is Louie who bolsters her confidence to confront him. Louie is very superstitious, in one episode exhibiting great concern when Jim has a premonition that Alex is going to die later that night. In 1999, TV Guide ranked De Palma first on its list of the 50 greatest TV characters of all time.^[3]
• Elaine O'Connor Nardo (Marilu Henner) – Elaine is a divorced mother of two, struggling to cope while trying to realize her ambitions in the field of fine art. Louie's object of lust, she is attracted to characters played by actors ranging from Tom Selleck to Wallace Shawn. The last name for the character was taken from Patricia Nardo, a scriptwriter, former secretary, and close friend of Taxi co-creator James L. Brooks.^[4]
• Anthony Mark "Tony" Banta (Tony Danza) – The kind-hearted, slow-witted Vietnam veteran and boxer has little success in the sport (in one episode Banta gives his record as 8 wins, 24 losses and he has been knocked out 14 times). In fact, Louie makes a lot of money betting against him (when Banta makes a conscious decision to throw a fight, Louie decides to bet on Banta because the only way Banta can remain a loser in such a situation is to win). Finally, the boxing commission takes away his license because he has been knocked out one too many times. In the final season, Tony is introduced to new girlfriend Vicki (Anne De Salvo) by Simka. He and Vicki have a falling out after she becomes pregnant by him, but reconcile and get married. The last name for the character was taken from Gloria Banta, a scriptwriter and close friend of Taxi co-creator James L. Brooks.^[5]
• Reverend Jim Ignatowski (Christopher Lloyd) (guest star 1978, main cast 1979–1983) – A washed-up figure of the 1960s, Jim lives in a world of his own. He was once a diligent, mature student at Harvard University, with an extremely wealthy father (Victor Buono), but one bite of a drug-laden brownie was enough to get him hooked and send him into a downward spiral. His real last name had been Caldwell; he changed it to Ignatowski, thinking that the backward pronunciation of that name was "Star Child". In a particularly memorable episode, the cabbies help him pass a written exam to become one of them. He occasionally exhibits unexpected talents, such as the ability to play the piano masterfully (much to his own surprise). TV Guide placed Ignatowski 32nd on its list of the 50 greatest TV characters.
• Latka Gravas (Andy Kaufman) – Latka is an immigrant from a strange foreign land, often speaking in his foreign tongue (actually gibberish, often with invented phrases such as "ibi da" or "nik nik"), but when speaking English he speaks with a very heavy accent. He works as a mechanic, fixing the taxis. Latka was an adaptation of Kaufman's "Foreign Man" character, which he originated in his stage act. In this act, "Foreign Man" claimed to be from the fictional island of Caspiar in the Caspian Sea. Kaufman, feeling that he had lost creative control over the character he had created, eventually grew tired of the gag, leading the writers to give Latka multiple personality disorder. This allowed Kaufman to play other characters, the most frequent being a repellent, smooth-talking lounge-lizard persona calling himself Vic Ferrari. In one episode, Latka becomes Alex, with profound insights into "his" life. Just as he is about to reveal to the real Alex the perfect solution for all his problems, he reverts to Latka.
• Simka Dahblitz-Gravas (Carol Kane) (recurring 1980–1982, starring 1982–1983) – She is from the same country as Latka. They belong to different ethnic groups which traditionally detest each other, but they fall in love and eventually marry. She is much more assertive than her husband, often standing up to Louie on his behalf.
• John Burns (Randall Carver) (1978–1979) – The naive young man works as a cabbie to pay for college, where he is working towards a degree in forestry. According to Carver, "the characters of John Burns and Tony Banta were too similar... some of the lines were almost interchangeable",^[6] so he was dropped after the first season without explanation. The premiere episode, "Like Father, Like Daughter", established that John started working for the cab company after he was a passenger in Alex's cab. John did not have change, so he had to ride with Alex to the garage to pay him. Once there, he started hanging around and eventually applied for a job. In the episode "The Great Line", he spontaneously marries a woman named Suzanne.

Recurring

• Jeff Bennett (J. Alan Thomas), Sunshine Cab's assistant dispatcher, he shares the "cage" with Louie but rarely speaks or interacts with the other characters. A quiet African-American man with an afro, Jeff appears throughout the show's run, initially as a bit part player and/or background performer. As the series progresses, Jeff gradually becomes more of a featured supporting player; his evolution culminates in a storyline in the Season 5 episode "Crime and Punishment", in which Louie falsely accuses Jeff of stealing car parts from the company and selling them on the black market—a crime which Louie himself committed. Thomas appeared as himself in the 1999 film Man on the Moon.^[7]
• Tommy Jeffries (T.J. Castronova), the bartender and waiter at Mario's, the restaurant where the group often hangs out. Tommy is pretty friendly with the whole gang, taking an interest in their personal lives.
• Joe Reiger (Jack Gilford) (1979–1981), Alex's father, from whom he is estranged. In his first appearance, he suffers a heart attack and Alex is convinced by his sister Charlotte (Joan Hackett) to visit him in the hospital. Alex and Joe had not spoken in 30 years, and Alex mistakes another patient for Joe.
• Zena Sherman (Rhea Perlman) (1979–1982). She has a romantic relationship with Louie (played by Perlman's real-life husband DeVito), but marries someone else after they break up.
• Greta Gravas (Susan Kellermann) (1979–1982), Latka's mother. She has a short fling with Alex, which causes friction with Latka.
• Phyllis Bornstein-Consuelos (Louise Lasser) (1980–1982), Alex's ex-wife, with whom he had a daughter. Phyllis became fed up with his lack of ambition and remarried, but they remain strongly attracted to each other. She once goes out on a date with Louie, to frustrate Alex.
• Cathy (Talia Balsam) (1978–1980), Phyllis and Alex's daughter. In the first episode of the series, Alex finds out that Cathy, who was a baby when he and Phyllis divorced, is making a stopover in Miami on her way to attend college in Portugal. He drives to Miami to meet her for the first time since then. In a later episode, he attends Cathy's wedding.
• Brian Sims (Marc Anthony Danza). In his first appearance, Tony fights a former boxing champ whose best days are behind him. He becomes troubled when he realizes that the champ is dedicating the fight to wheelchair user Brian (played by his real-life son, Marc Anthony Danza^[8]). In a next-season episode, Tony seeks to adopt him.

Guests

Among the many guest stars, Ruth Gordon won an Emmy Award for her guest portrayal of Dee Wilcox in "Sugar Mama" (1979), and Eileen Brennan was nominated for an Emmy for her guest portrayal of Mrs. McKenzie in "Thy Boss's Wife" (1981). Actresses Marcia Wallace and Penny Marshall, psychologist Dr. Joyce Brothers, cookie entrepreneur Wally "Famous" Amos, newscaster Edwin Newman, and ring announcer Jimmy Lennon portrayed themselves in separate episodes.

George Wendt and Ted Danson, who appeared in separate episodes, went on to star in primary Taxi director Jim Burrows' next series, Cheers, as did recurring Taxi performer Rhea Perlman. Tom Selleck and Mandy Patinkin had memorable guest appearances, each constituting one of the memorable fares of Cab 804 (in "Memories of Cab 804: Part 2"), while Tom Hanks portrayed Reverend Jim's college roommate in the flashback episode "The Road Not Taken, Part 1".

WBC world welterweight champion Carlos Palomino appeared in the episode "One-Punch Banta" as himself (season 1, episode 2, original air date September 19, 1978). In that episode, Palomino accidentally punched Danza in the face during a brief fight scene. Allan Arbus, who portrayed US Army psychiatrist Dr. Sidney Freedman in M*A*S*H, played his manager in the episode. Football player-turned-actor Bubba Smith appeared in one episode. Newscaster Eric Sevareid played himself in a fantasy sequence. Martial artist and professional wrestler Gene LeBell played himself in multiple episodes as the referee for Tony Banta's boxing matches. In one episode, Martin Short played a TV network executive who takes advantage of Jim's ability to see glimpses of the future for his own career advancement; in response, Jim demonstrates superior ethical standards along with remarkable cleverness.

Emmy Awards

Wins in bold

• Comedy Series (1979–1981, 1982, 1983)
• Lead Actor in a Comedy Series – Judd Hirsch (1979, 1980, 1981, 1982, 1983)
• Guest Actress in a Comedy Series – Ruth Gordon (1979)
• Guest Actress in a Comedy Series – Eileen Brennan (1981)
• Lead Actress in a Comedy Series – Carol Kane (1982)
• Supporting Actor in a Comedy Series – Danny DeVito (1979, 1981, 1982, 1983)
• Supporting Actor in a Comedy Series – Christopher Lloyd (1982, 1983)
• Supporting Actress in a Comedy Series – Carol Kane (1983)
• Directing in a Comedy Series – James Burrows (1980, 1981, 1982)
• Writing in a Comedy Series – Glen Charles and Les Charles (1980, 1981)
• Writing in a Comedy Series – Ken Estin (1982, 1983)
• Writing in a Comedy Series – Barry Kemp and Holly Holmberg Brooks (1982)
• Writing in a Comedy Series – Michael J. Leeson (1979, 1981)
• Writing in a Comedy Series – David Lloyd (1981)
• Film Editing for a Series – M. Pam Blumenthal (1979–1981), Jack Michon (1981)

Golden Globe Awards

Wins in bold

• Best Television Series-Comedy (1979, tied in 1980 with Alice, 1981, 1982–1984)
• Best Actor in a TV Series-Comedy – Judd Hirsch (1979–1983)
• Best TV Supporting Actor – Danny DeVito (1979, tied in 1980 with Vic Tayback from Alice, 1981, 1982)
• Best TV Supporting Actor – Jeff Conaway (1979, 1980)
• Best TV Supporting Actor – Andy Kaufman (1979, 1981)
• Best TV Supporting Actor – Tony Danza (1980)
• Best TV Supporting Actress – Marilu Henner (1979–1983)
• Best TV Supporting Actress – Carol Kane (1983)

Theme music

Bob James wrote the opening theme, "Angela", which had been intended for a sequence in episode #3 ("Blind Date"). The producers liked this slower, more melancholic tune better than the up-tempo opening theme they had originally chosen ("Touchdown"), and were able to make the switch before the first episode aired. Both songs are on James's 1978 album, Touchdown.

In 1983, James released The Genie, an LP containing much of the incidental music he had written for Taxi during its run.