- Pat Morita - The Bartender
- Michael Lerner - Mr. Carolla
- John Fiedler - Mr. Emil Peterson
- Mike Henry - Frank Nugent
- K.C. Martel - Kid 2
- James B. Sikking - Dick
- M. Emmet Walsh - Jack Hoover
- Patricia Smith - Margaret Hoover
- Helen Page Camp - Mrs. Prince
- Helen Page Camp - Myrna Hoover
- Larry Gelman - Dr. Bernie Tupperman
- Macon McCalman - Dr. Malcolm
- Bernie Kopell - Dr. Arnold
- Jack Riley - Elliot Carlin
- Quinn K. Redeker - Dr. Dalton
- Bill Quinn - Dr. James Wyler
- Howard Hesseman - Craig Plager
- Howard Hesseman - Augie (voice) (uncredited)
- Archie Hahn - Bellman
- Madeleine Fisher - Miss Pringle
- Jack O'Leary - Plumber
- Richard Libertini - Mr. Twillmer
- J.R. Miller - Kid 1
- Brian Byers - Box Boy
- Florida Friebus - Mrs. Lillian Bakerman
- Tom Fitzsimmons - Webb Franklyn
- Sondra Theodore - Girl 1
- Betty Kean - Flo
- Alberto Morin - Waiter
- Vern Rowe - Moose Washburn
- Julian Christopher - Phil Bender
- Len Lesser - Mr. Schwab
- Henry Winkler - Miles Lascoe
- Pat Finley - Ellen Hartley
- Daniel J. Travanti - Mr. Gianelli
- Ralph Bellamy - Alan Dreeben
- Lou Cutell - Petersen Character
- Jerry Fogel - Paul Billingham / Ralph Alfalfa
- Ron Masak - Mike Mitchell
- Louise Lasser - Mrs. Radford
- Jeff Donnell - Clara Hackler
- Penny Fuller - Nancy Brock
- Cynthia Harris - Diane Nugent
- James Hong - The Man
- J. Jay Saunders - Williams
- Alan Haufrect - Felon
- Paul Bryar - Mr. Firman
- George Wyner - Rex Pottinger
- Lorenzo Music
- Tom Patchett
- Mark Tinker
- Michael Zinberg
- Grant Tinker
- Gordon Farr
M. Emmet Walsh interpreta a Jack Hoover en la serie.
Michael Lerner hace el papel de Mr. Carolla.
Ralph Bellamy hace el papel de Alan Dreeben.
Bob Newhart interpreta a Robert Hartley en la serie.
Suzanne Pleshette interpreta a Emily Hartley en la serie.
Bill Daily interpreta a Howard Borden en la serie.
Marcia Wallace interpreta a Carol Kester Bondurant en la serie.
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