A few folks have dropped by here via a link from a comment I left on Rosie's blog re: Tom Cruise. For their benefit - and yours, I offer you two links:
1. Wikipedia entry on "Xenu" - the big baddie of Scientology. You know how Cruise has been talking to German media outlets about believing in aliens? Here you go.
2. Operation Clambake - a clearinghouse for information on Scientology as a cult.