International Cultic Studies Association
This is their you tube channel with plenty of good videos.
Cults: Dangerous Devotion
A documentary by the History Channel. Brief overview of the most notorious cults in recent history, interviews with fromer cult members and experts.
How Cults Work
A tongue in cheek look at how cults work with a few really good examples. It is an ironic manual for the wanna be cult leader.
Cult Witness unravels the hidden world of cults; the hold they have on their victims, the reasons people form and fall prey to them and what takes place within. This is the trailer.