<P> Eventually, Kelp's formerly timid father chooses to market the formula (a copy of which Kelp had sent to his parents' home for safekeeping), endorsed by the deadpan president of the university who proclaims, "It's a gasser!" Kelp's father makes a pitch to the chemistry class, and the students all rush forward to buy the new tonic . In the confusion Kelp and Purdy slip out of the class . Armed with a marriage license and two bottles of the formula, they elope . </P> <P> During the short closing credits, each of the characters come out and bow down to the camera, and when Jerry Lewis, still portraying Kelp, comes out and bows, he trips and goes into the camera, breaking it and causing the picture to go black . </P> <Ul> <Li> Jerry Lewis as Professor Julius F. Kelp / Buddy Love / Baby Kelp </Li> <Li> Stella Stevens as Ms. Stella Purdy </Li> <Li> Del Moore as Dr. Mortimer S. Warfield </Li> <Li> Kathleen Freeman as Ms. Millie Lemmon </Li> <Li> Howard Morris as Mr. Elmer Kelp </Li> <Li> Elvia Allman as Mrs. Edwina Kelp </Li> <Li> Julie Parrish as College Student </Li> <Li> Milton Frome as Dr. M. Sheppard Leevee </Li> <Li> Buddy Lester as Bartender </Li> <Li> Med Flory as Warzewski, the football player </Li> </Ul> <Li> Jerry Lewis as Professor Julius F. Kelp / Buddy Love / Baby Kelp </Li>

Who played in the nutty professor with jerry lewis