Film Scientology Doesn't Want Seen

…There is very little footage of Hubbard himself, who went into hiding after sneaking back in the U.S. in the 1970s. But Gibney did obtain video of Hubbard being interviewed by Granada Television, and it makes for one of the documentary's most chilling moments.

"Do you ever think that you might be quite mad?" the reporter asks.

Gibney lingers perhaps unnecessarily on Hubbard's yellowed smile. "Oh yes," he answers. "The one man in the world who never believes he's mad is a madman."