The "church" of Scientology was found guilty of fraud by a French court. The organization was fined $1,000,000 for defrauding gullible members. The court wanted to outright ban the organization but figured that it would just go 'underground' if it did.
I remember reading L. Ron Hubbard's book "Dianetics" when I was younger, and thinking that it was really off the wall. Hubbard's thesis is that there are "engrams" - small green and red that live in your head and influence your behavior.
To see a "true believer" in action, here's one of their 'stars' in all his scientological glory:
Some people will fall for anything, and Scientology proves it.