Trailer
 | Gene Wilder as Harry Evers |
 | Bob Newhart as Marvin Ellison |
 | Ellen Burstyn as Lynne Evers |
 | Cloris Leachman as Lois Ellison |
 | Martha Scott as Mrs. Reynolds |
 | Nancy Walker as Mrs. Bender |
 | Valerie Harper as Ann Menzente |
 | Rob Reiner as Joel Forrest |
 | Norman Fell as Melvin Leonard |
 | Gino Conforti as Mike |
 | Richard Schaal as Bob |
 | Robert Sampson as Dave |
 | Richard Gautier as John |
 | Jean-Michel Michenaud as David Evers (as Gerald Michenaud) |
 | John Archer as Mr. Wood |
| Jonathan Kidd as Waiter |
| Barbara Barnett as Secretary |
 | Jed Allan as Dick |
 | William Callaway as Cabbie |
 | Sidney Clute as Camp Director |
 | Chris Sarandon as Counselor |
| Charles Shull as Announcer |
 | Carol Worthington as Contestant |
| Ric Mancini as Bartender |
 | Loyd Catlett as Camp Counselor |
| Ben Lautman as New Yorker |
| Directing | |
| Robert Moore | Director |
Writing | |
| James L. Brooks | Writer |
Production | |
| James L. Brooks | Producer |
Sound | |
| Billy Goldenberg | Original Music Composer |
Camera | |
| Joseph F. Biroc | Director of Photography |
Editing | |
| Diane Adler | Editor |
| Fredric Steinkamp | Editor |
Art | |
| Trevor Williams | Art Direction |
