| Cast overview, first billed only: | |||
| Jerry Lewis | ... | Prof. Julius Kelp / Buddy Love | |
| Stella Stevens | ... | Stella Purdy | |
| Del Moore | ... | Dr. Mortimer S. Warfield | |
| Kathleen Freeman | ... | Millie Lemmon | |
| Med Flory | ... | Warzewski | |
| Norman Alden | ... | Football Player / Student | |
| Howard Morris | ... | Elmer Kelp | |
| Elvia Allman | ... | Edwina Kelp | |
| Milton Frome | ... | Dr. M. Sheppard Leevee | |
| Buddy Lester | ... | Bartender | |
| Marvin Kaplan | ... | English Student | |
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David Landfield | ... | College Student |
| Skip Ward | ... | Football Player | |
| Julie Parrish | ... | College Student | |
| Henry Gibson | ... | Gibson - College Student | |
Nerd. Milquetoast. Klutz. These are just three of the many undesirable words that can be used to describe Professor Julius Kelp. But all that changes when the chemistry expert invents a potion that transforms him into a suave, sexy chick magnet, whom Julius aptly names Buddy Love. Unfortunately, there's one side effect: Buddy can't control when he'll change back into Julius, an event that always happens at inopportune times. How will Julius/Buddy resolve his Jekyll-and-Hyde dilemma? Written by alfiehitchie
i enjoy watching jerry lewis's movies and this one is an all-time classic! the story is out of the ordinary and that's what makes it fun and enjoyable. it's very interesting to watch jerry's cute mannerisms such as:running his tongue over his teeth, stuttering [especially towards stella]and that memorable voice. i find the proffesor kelp character much more appealing then buddy love. b.l. can get on one's nerves with his smooth fonzie/gangster attitude. one of the best scenes in the movie was when j.l. sings "that old black magic". stella stevens portrays stella very well but how could a student/teacher marriage be looked upon? a must see and definetly a classic!