Did you drink the Kool-Aid? The phrase has become such a part of the vocabulary that for many its origins have been obscured.

Madame Helena Blavatsky was the 19th century's most famous and notorious occultist. She was also the godmother of the New Age movement. 

Surfing is considered by some to constitute an aquatic nature religion.

For a religion that some experts estimate includes only 30,000 members worldwide, Scientology attracts a lot of attention. But not so much from scholars.