The Church of Satan was a very small and quirky organization that began in, where else, San Francisco, by Anton LaVey. This film is a documentary about the church, their beliefs, the neighbors' attitudes towards them and those who attend. While this is an interesting topic, the fact that it's such a small and insignificant organization makes it of marginal historical and social interest.
Other than showing some of the ceremonies of this organization, this documentary simply lets people within and outside the organization talk with very, very little direction from the film makers. In fact, the entire film seems rather non-planned and not particularly structured. Because of this, the film tends to wander at times and many of the interviews look as if they should be edited heavily. Simply recording people and stringing the interviews together is not great film making and some might find the whole thing tedious after a while. I truly believe the film could have been half as long or even shorter and been much more interesting and effective. There are also some nudes (mostly quite unattractive) and a bare butt being flogged. They don't particularly seem interesting or necessary and I wonder if they were added to try to "spice up" an otherwise dull film.
What I would have enjoyed a lot more would have been more of a biographical study of LaVey or Alistair Crowley--to figure out what made them tick, so to speak. Otherwise, just listening to everyone talk and talk and talk became quite a strain on most people's patience. If only they could get Louis Theroux to interview the current members and high priest of the Church of Satan--now THAT would be interesting.