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.
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The voice of Bart Simpson has donated millions to the church since joining in 1989. In 2009, she donated Bart's voice to a robocall promoting a Scientology event in Los Angeles. (UPI Photo/Jim Ruymen)
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