Famous Scientologists (23 images)

With Janet Reitman's new book "Inside Scientology: The Story of America's Most Secretive Religion," building up steam, take a look at some of the most well-known, and most surprising, celebrity Scientologists.
Updated: Nov. 21, 2011 at 3:14 PM
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Alley reportedly joined Scientology after a Scientology treatment program helped her end her dependence on cocaine. UPI/John Angelillo
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