Well, Aum Shinrikyo might have made an anime about some bearded man doing some simple levitation like if he's in The Excorist, but dude, Aum Shinrikyo also did stage shows with characters such as Doraemon, Anpanman, and even, Pokemon, I remember learning about those stage shows via a video by Gubby (not Gibby, you Dan Schneider freak)
but the other retarded cults I can think out of my head is The People's Temple, famous for the massacre on Nov. 18, 1978, where Rev. Jim Jones and his wife an heroed themselves along with many other people, some of them being Anchors for NBC News and one of them was a congressmen, Leo Ryan, and people drank poison-laced Kool-Aid (actually it was Flavor-Aid, but some people, like me, like to call the drink used in the massacre as "Kool-Aid", thanks to several memes), and Scientology, famous for... well, take a pick... South Park? The Rapsittie Street Kids: Believe in Santa's Director, Colin Slater? I don't fuckin' know