Maybe I should have known this already, but Will Smith is a scientologist (link mildly NSFW).
Of course, Tom Cruise is still a complete freaking nutbag:
Update: Sigh. Scientologists are two things (well, three, if you count pure evil): predictable, and litigious. The video was taken down. Oh well, it just had Tom Cruise rambling on and on about how scientology is wonderful, and can cure and do anything, except save a tanking career and make you not look foolish.
UPDATE II: Gawker.com has the video, and they are promising not to take it down. Go there to have your thetans inflated.