 | Dan Aykroyd als Jack Lambert |
 | Lily Tomlin als Inga Mueller |
 | Jack Lemmon als Mueller / Luger |
 | Bonnie Hunt als Gail Holland |
 | Brian Kerwin als Marty Lambert |
 | Jerry Adler als Judge |
 | Andy Romano als Psychiatrist |
 | Robert Fields als Sgt. Roarke |
 | J.C. Quinn als Detective Stanley |
 | Susan Forristal als Waitress Patti |
| Marissa Chibas als Liz Lambert |
| Jon Korkes als Chemistry Lab Professor |
 | Kathleen Marshall als Student #1 |
| Jack Jessup als Old Man |
| Judy Sinclair als Old Woman |
 | Dave Nichols als Lawyer Brownell |
 | Damon D'Oliveira als Electronic Salesman |
 | Wayne Robson als Bartender |
| Harvey Miller | Director |
| Frank Price | Producer |
| Penny Marshall | Producer |
| Harvey Miller | Screenplay |
| Georgianne Walken | Casting |
| Sheila Jaffe | Casting |
| Susanna David | Script Supervisor |
| John Debney | Original Music Composer |
| Richard Nord | Editor |
| Jennifer Bower O'Halloran | Key Hair Stylist |
| Judith R. Gellman | Costume Design |
| John Jay Moore | Production Design |
| Shane Harvey | Still Photographer |
| Frank Tidy | Director of Photography |
| Frederic W. Brost | Executive Producer |
| Elliot Abbott | Executive Producer |
| Gail Sicilia | Associate Producer |
| Branko Racki | Stunt Coordinator |
| Rod Crombie | Steadicam Operator |
| Henri Fiks | Camera Operator |
| Eric Holmes | Gaffer |
| Dick Bernstein | Music Editor |
| Kenneth Wannberg | Music Editor |
| Jeff Ginn | Art Direction |
| Tracey A. Doyle | Set Decoration |
| Judith R. Gellman | Costume Designer |
| Michael Brownstone | Unit Production Manager |
| Frank Fleming | Sound Recordist |
| John Hulsman | Sound Editor |
| Eric Lindemann | Supervising Sound Editor |
| Marvin Walowitz | Sound Editor |
| David A. Whittaker | Sound Editor |
| Douglas Ganton | Sound Mixer |
| David Lee | Production Sound Mixer |
