It's a far ranging exploration of the exploitation cinema. It takes a history trip from the beginning of film all the way to today. It doesn't really try to limit the scope, and skims through 100 years. It features several talking heads. The most famous of the experts is director John Landis.
This serves as a general documentary of the fringe movie world. The best thing is all the clips of these old movies. The talking heads aren't digging too deep but are generally well informed. Robert Forster does a good job as the narrator. His gruff voice isn't the normal narration but somehow fits the subject matter. This is a steady march through history categorizing all the major movements hitting the big moments. The best interviews are the actual participants who are talking about their own movies. The doc does grind down as the movie has nowhere to go with the arrival of porn. I guess that's another doc. The final section of Hollywood trying to rip off the grindhouse isn't quite as compelling. As a general doc, it hits most of the big points.