Best Known For: his Jewfro’d stoner Hyde character from That '70s Show.

Why You Wouldn't Expect Him To Be a Scientologist: Masterson played the only bearable character in a show consisting of smirking human skeleton Topher Grace, face-punchable douchebag Ashton Kutcher and functionally retarded ethnic stereotype (and Lindsey Lohan despoiler) Wilmer Valderrama. Masterson’s the only guy in that cast that we don't actually want to strangle to death, and that's taking into account that he probably spends at least two embarrassing hours a day "sideburn-grooming."

But, alas, it's true. In his own words: "I have always been in Scientology my entire life. Each service in Scientology is something I have added to my toolbox of data for living." In December 2005, Masterson helped promote the gala opening of Scientology's controversial "Psychiatry: An Industry of Death" Museum. You know, for the kids.

Connections: Laura Prepon, the red-headed masturbatory aid from That '70s Show, was brought into the Scientology fold by Danny and his brother Christopher (troublemaker Francis on Malcolm in the Middle) after Laura and Christopher started dating. Frankie Muniz has so far not been asked to participate, putting his Thetans at considerable risk. On the plus side, Frankie Muniz has not been asked to participate in something.

Presumed Operating Thetan Level: unknown; can perhaps be found in his high-tech data toolbox