Hollywood Rated 'R': A roller-coaster ride through the history of American exploitation films, ranging from Roger Corman's sci-fi and horror monster movies, 1960s beach movies, H.G. Lewis' gore-fests, William Castle's schlocky theatrical gimmicks, to 1970s blaxploitation, pre-"Deep Throat" sex tease films, Russ Meyer's bosom-heavy masterpieces, etc, etc. Over 25 interviews of the greatest purveyors of weird films of all kind from 1940 to 1975. Illustrated with dozens of films clips, trailers, extra footage, etc. This documentary as a shorter companion piece focusing on exploitation king David F. Friedman.