About as interesting as a loosely-related series of sparse conversations with cult-favorite directors is likely to get. The goal seems to have been the assembly of a "straight from the horse's mouth" oral history of exploitation at large in cinema, but none of the subjects could really nail down the outer limits of what the term meant. So, instead, it became a crash-course history of underground film, decorated at all corners with vaguely familiar old men reminiscing about their glory days. The narrative jumps all over the place, sometimes floating from the '20s to the '90s over the course of a single sentence. That's OK, though, because the sheer breadth of knowledge and a shared recollection of the crazy promotional stunts each film undertook to get noticed makes the journey worthwhile. It's also one hell of a Netflix recommendation engine.