Directed by
| John Rich | ||
Writing Credits (in alphabetical order)
| Dick Clement | ... | (written by) |
| Ian La Frenais | ... | (written by) |
Cast (in credits order)
| Steve Guttenberg | ... | Billy Fisher | |
| James Gallery | ... | George Fisher | |
| Peggy Pope | ... | Alice Fisher | |
| Paula Trueman | ... | Gran | |
 |
Michael Alaimo | ... | Norval Shadrack |
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Bruce Talkington | ... | Arthur Milliken |
| Don Adams | ... | Don Adams | |
|
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Peggy Lee Brennan | ... | Nanny |
| Janice Kent | ... | Secretary | |
|
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Ron Vernan | ... | Eddie |
| Rest of cast listed alphabetically: | |||
|
|
Nataraj Watkins | ||
Produced by
| John Rich | ... | producer |
Music by
| Earle Hagen | ||
Cinematography by
| Ronald W. Browne | ... | director of photography |
Editing by
| Gene Ruggiero | ||
Casting By
| Sam Christensen | ||
| Joyce Robinson | ||
Art Direction by
| Frank T. Smith | ||
Set Decoration by
| Michele Guiol | ||
Production Management
| Mark Evans | ... | executive production manager |
| William Green | ... | unit production manager |
| Joseph Silver | ... | post-production supervisor |
Second Unit Director or Assistant Director
| Robert A. Milford | ... | second assistant director (as Robert Milford) |
| Don Zepfel | ... | first assistant director |
Music Department
| Ray Kennedy | ... | composer: theme music / opening theme "You Could Be the Only One" performed by |
| Ian La Frenais | ... | composer: theme music |
| Lionel Newman | ... | music supervisor |
Additional Crew
| Dick Clement | ... | story consultant |
| Ian La Frenais | ... | story consultant |