5. H.O.T.S. (1979)
In 1978, Animal House made frat houses cool, and in the natural order of Hollywood hackery, a gratuitous sorority house flick was soon in the offing. Any movie that opens with a group shower and ends with a strip football game should automatically get you to stop reading and hit up the instant queue. If that's not enough, this also contains hot body contests, nude skydiving, topless piefights, and a roidless Danny Bonaduce.
A pre-Porky's porkfest that has as much charm as it has boobs (which means it's got a shit ton of charm).