Jerry Lewis (Stanley Belt), Ina Balin (Ellen Betz), Everett Sloane (Caryl Ferguson), Phil Harris (Chic Wymore), Keenan Wynn (Harry Silver), Peter Lorre (Morgan Heywood), John Carradine (Bruce Arden), Hans Conried (Prof. Mulerr), Phil Foster (Mayo Sloan), Richard Deacon (Sy Devore), Quinn O'Hara (Cigarette Girl), Scatman Crothers (Shoeshine Boy), Del Moore (Policeman), Neil Hamilton (The Barber), Buddy Lester (Copa Café MC), Ed Wynn (er selbst), Nancy Kulp (Helen, Theatergoer), Lloyd Thaxton (Lloyd), Norman Alden (Bully at the Gym), Jack Albertson (Theatergoer with Helen), Henry Slate (Paul), Gavin Gordon (Executive on Golf Course), Ned Wynn (Band Member), Rhonda Fleming (Rhonda Fleming), Fritz Feld (Maitre D'), Hedda Hopper (Hedda Hopper), George Raft (George Raft), The Four Step Brothers (Dancers)