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Jerry Lewis as Willard Woodward / James Peyton / Everett Peyton / Julius Peyton / Eddie Peyton / Skylock Peyton / Bugs Peyton |
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Donna Butterworth as Donna Peyton |
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Sebastian Cabot as Dr. Matson |
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Neil Hamilton as Attorney |
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Jay Adler as Attorney |
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Anne Baxter as Anne Baxter |
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Robert Strauss as Pool Player |
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Jesslyn Fax as Airline Passenger |
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Renie Riano as Airline Passenger |
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Herbie Faye as Joe |
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Norman Leavitt as Gas Station Attendant |
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Ellen Corby as Airline Passenger |
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Marjorie Bennett as Airline Passenger |
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Vince Barnett as Automobile Owner at Gas Station |
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Milton Frome as Pilot |
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John Hubbard as Pilot |
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Benny Rubin as Sign Painter |
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Gerald Mohr as Movie Actor |
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Gene Baylos as Clown |
| Directing | Jerry Lewis | Director |
| Writing | Jerry Lewis | Writer |
| Writing | Bill Richmond | Writer |
| Directing | Ralph Axness | Assistant Director |
| Camera | W. Wallace Kelley | Director of Photography |
| Costume & Make-Up | Edith Head | Costume Design |
| Costume & Make-Up | Sy Devore | Wardrobe Designer |
| Costume & Make-Up | Nellie Manley | Hair Supervisor |
| Costume & Make-Up | Wally Westmore | Makeup Supervisor |
| Art | Robert R. Benton | Set Decoration |
| Art | Jack Poplin | Art Direction |
| Crew | Marvin Weldon | Dialogue Coach |
| Art | Sam Comer | Set Decoration |
| Art | Hal Pereira | Art Direction |
| Sound | Howard Beals | Sound Effects Editor |
| Sound | Charles Grenzbach | Sound Recordist |
| Crew | Paul K. Lerpae | Special Effects |
| Editing | Russel Wiles | Assistant Editor |
| Production | Jerry Lewis | Producer |
| Sound | Pete King | Original Music Composer |
| Directing | Betty Fancher | Script Supervisor |
| Sound | Hugo Grenzbach | Sound Recordist |
| Art | John L. Jensen | Title Designer |
| Editing | John Woodcock | Editor |
| Production | Arthur P. Schmidt | Associate Producer |
| Sound | Paul Haggar | Music Editor |
| Production | William Davidson | Production Manager |
