Taxi - Season 4 - Eps 3: Mr. Personalities
Latka begins exhibiting multiple personalities again: not only Vic Ferrari, but also a cowboy, and best of all, he becomes Alex! Elaine refers Latka to her psychiatrist, but meanwhile Latka is becoming even more ""Alex""-like than Alex himself: he is a better cab driver and gives better advice to the gang. Alex decides he'd better sit in on a psychiatric session with Latka and Latka/Alex is about to reveal the answer to all of Alex's problems (somehow he has figured out the secret to Alex in the midst of subconsciously becoming him), when he becomes Latka again. This leaves Alex extremely frustrated and after Latka leaves, Alex sticks around to talk to the psychiatrist further.
About Taxi

Title: Taxi
First Air Date: 1978-09-12
Last Air Date: 1983-06-15
Status: Ended
Rating: 7.233/10 (from 159 votes)
Language: EN
Seasons: 5
Total Episodes: 114
Network: ABC NBC
Genres: Comedy, Drama
Production Companies: Paramount Television, John-Charles-Walters Productions
Synopsis
Louie De Palma is a cantankerous, acerbic taxi dispatcher in New York City. He tries to maintain order over a collection of varied and strange characters who drive for him. As he bullies and insults them from the safety of his “cage,” they form a special bond among themselves, becoming friends and supporting each other through the inevitable trials and tribulations of life.
Cast

Judd Hirsch
Alex Reiger

Danny DeVito
Louie De Palma

Marilu Henner
Elaine O'Connor-Nardo

Tony Danza
Tony Banta

Andy Kaufman
Latka Gravas

Christopher Lloyd
Reverend Jim 'Iggy' Ignatowski

Carol Kane
Simka Gravas