Satanis: The Devil's Mass (1970)

This film swings the doors to the early days of the Church of Satan (CoS) wide open and was, for quite some time, the only interview footage of Anton Szandor LaVey available. (Scenes from this film are still in use today in news specials and documentaries, often times used as propaganda by some groups to turn people FROM Satanism. Most of the humor in this film will not be seen by the audiences that these groups are trying to influence.)