I was going to post
www.xenu.net as well.
And yah, Scientology is based on the belief that the Galactic overlord, Xenu, used Earth as a concentration camp millions of years ago, and once it was full, had it carpet H-bombed until the surface was molten. In the present day, mental disease is really posession via the ghosts of these condemmed aliens trying to live through our bodies.
Oh yeah, Ron L. Hubbard was really "God" who came down to tell us the truth about all this.
And no, I am not making this up. Even Time magazine ran an expose on this in a nifty color fold out chart a couple of years ago.
The whole space-ghosts/Xenu thing was supposed to be super-secret and only to be revealed to the innermost levels of Scientology, namely those too far gone into the cult to be a risk.
Frankly the whole thing is likely a practical joke by Ron L. on the world, but is own neuroses and paranoia over Psycology and his rejection from military service took over.
Scientology aggresively recruits celebrities and gives them VIP treatment to get the press and the free marketing. It "works" for them, becuase frankly, any organization devoted to kissing your A-- non-stop 24/7 will probably make you feel somewhat better, no? Unfortunately, the experience of the rank-and-file Scientologist who pays through the nose for "edits" and "sessions" and "e-meters" is very, very different.