Before going on vacation, self-involved psychiatrist Dr. Leo Marvin has the misfortune of taking on a new patient: Bob Wiley. An exemplar of neediness and a compendium of phobias, Bob follows Marvin to his family's country house. Dr. Marvin tries to get him to leave; the trouble is, everyone loves Bob. As his oblivious patient makes himself at home, Dr. Marvin loses his professional composure and, before long, may be ready for the loony bin himself.
| Production | Laura Ziskin | Producer |
| Camera | Michael Ballhaus | Director of Photography |
| Sound | Miles Goodman | Original Music Composer |
| Directing | Frank Oz | Director |
| Editing | Anne V. Coates | Editor |
| Writing | Tom Schulman | Screenplay |
| Costume & Make-Up | Bernie Pollack | Costume Design |
| Art | Leslie Dilley | Production Design |
| Production | Glenn Daniels | Casting |
| Art | Jack Blackman | Art Direction |
| Art | Anne Kuljian | Set Decoration |
| Visual Effects | Richard O. Helmer | Special Effects Supervisor |
| Art | Michael R. Clark | Painter |
| Crew | Michael Steve Jones | Stunts |
| Sound | John K. Carr | Sound Editor |
| Art | Russell Bobbitt | Property Master |
| Sound | John Phillips | Sound Editor |
| Lighting | Robert W. Meyers | Rigging Gaffer |
| Production | Tandi Slater | Production Accountant |
| Directing | Donald J. Lee Jr. | Second Assistant Director |
| Art | Douglas Fox | Property Master |
| Sound | David Grannis | Assistant Sound Editor |
| Sound | Hal Sanders | Sound Editor |
| Sound | Catherine Harper | Foley Artist |
| Camera | Florian Ballhaus | First Assistant Camera |
| Sound | Terry Porter | Sound Re-Recording Mixer |
| Camera | David M. Dunlap | Camera Operator |
| Sound | Edward M. Steidele | Foley Artist |
| Directing | Susan Malerstein | Script Supervisor |
| Art | Wayne Shepherd | Leadman |
| Sound | Kenneth C. Mantlo | Boom Operator |
| Writing | Alvin Sargent | Story |
| Directing | James W. Skotchdopole | First Assistant Director |
| Art | Donald G. Helderle | Construction Foreman |
| Sound | Bill Phillips | Supervising Sound Editor |
| Sound | Ed White | Sound Mixer |
| Camera | Craig Kohtala | Best Boy Grip |
| Camera | Barry Wetcher | Still Photographer |
| Sound | Nancy Fogarty | Music Editor |
| Art | Ken Scaife | Construction Coordinator |
| Sound | Pieter Hubbard | Sound Editor |
| Production | Sandy Isaac | Post Production Coordinator |
| Sound | Scott Shadden | Assistant Sound Editor |
| Camera | Bobby Mancuso | Second Assistant Camera |
| Production | Charles Thomas Baxter | Location Manager |
| Costume & Make-Up | Matthew W. Mungle | Makeup Artist |
| Costume & Make-Up | Hugo Peña | Costume Supervisor |
| Editing | James D.R. Hickox | Assistant Editor |
| Writing | Laura Ziskin | Story |
| Art | Frank B. Nieves | Construction Foreman |
| Sound | David J. Hudson | Sound Re-Recording Mixer |
| Sound | Mel Metcalfe | Sound Re-Recording Mixer |
| Editing | Christopher Cibelli | Assistant Editor |
| Crew | Rafe Blasi | Unit Publicist |
| Production | Dana Williams | Production Coordinator |
| Production | Bernard Williams | Co-Producer |
| Production | Lisa Lynn Kearsley | Production Coordinator |
| Costume & Make-Up | Emanuel Millar | Hairstylist |
| Sound | Liz Carlin | Assistant Sound Editor |
| Production | David C. Anderson | Unit Production Manager |
| Art | Brett C. Smith | Set Dresser |
| Camera | Stuart Abramson | Key Grip |
| Lighting | James R. Tynes | Chief Lighting Technician |
| Art | Roger G. Fortune | Set Designer |
| Sound | Bruce Bell | Foley Mixer |
| Sound | Devon Heffley Curry | ADR Editor |
| Sound | Doc Kane | ADR Mixer |
| Camera | Arthur Blum | Dolly Grip |
| Crew | Dennis Scott | Stunt Coordinator |
| Crew | Steve Hart | Stunts |
| Crew | James Kindelon | Stunts |
| Crew | Ted Barba | Stunts |
| Crew | Bobby Burns | Stunt Double |
