Airplane had ethnic stereotype jokes in it, but they weren't the main draw of the movie. I think the Leslie Nielson style of prop driven physical dumb guy humor could be popular again. Right now the comedy market is pretty saturated with the opposite, conversational political humor that a lot of people are getting tired of. The fraternity kind of humor would be more difficult to modernize, I agree, but it's not like immature sex humor is gone from today's comedies. It'd just have to look more like the kind you see in things like Superbad or The Hangover.