The controversial religion has a big following in Hollywood and these faces are all part of the clan.
Bijou Phillips, actress (played Lucy Carlyle on Fox's "Raising Hope")
Anne Archer, actress (played Beth Gallagher in "Fatal Attraction")
John Travolta, actor ("Battlefield Earth" etc.)
Bodhi Elfman, actor ("Collateral", "Enemy of the State", "Mercury Rising" etc.)
Tom Cruise, actor ("Mission Impossible 2" etc.)
Catherine Bell, actress (played Lieutenant Colonel Sarah MacKenzie on NBC's and CBS's "JAG")
Christopher Masterson, actor (played Francis on Fox's "Malcom in the Middle")
Danny Masterson, actor (played Steven Hyde on Fox's "That 70s Show")
Doug-E-Fresh, rapper, beatboxer
Beck, musician
Elisabeth Moss, actress (played Peggy Olson on AMC's "Mad Men")
Erika Christensen, actress ("Traffic", "Swimfan", "The Perfect Score")
Ethan Suplee, actor ("American History X", "Remember the Titans", "Boy Meets World" etc.)
Giovanni Ribisi, actor (plays Warner Whittemore on Fox's "Dads")
Greta Van Susteren, commentator (Fox News's "On The Record with Greta Van Susteren")
Isaac Hayes, musician
Jason Lee, actor ("My Name is Earl" and Kevin Smith Movies)
Jeff Conaway, actor (played Kenickie "Grease")
Jenna Elfman, actress (played Dharma on Fox's "Dharma and Greg")
Jim Meskimen, improviser ("Whose Line is it Anyway?")
Juliette Lewis, actress ("What's Eating Gilbert Grape?", "Natural Born Killers", and "From Dusk Till Dawn")
Kristie Alley, actress (played Rebecca Howe on NBC's "Cheers")
Laura Prepon, actress (played Donna Pinciotti on Fox's "That 70s Show" and Alex Vause on Netflix's "Orange Is the New Black")
Marissa Ribisi, actress ("Dazed and Confused", "The Brady Bunch Movie", and "Pleasantville")
Nancy Cartwright, voice actress (voice of Bart Simpson on Fox's "The Simpsons" and Chuckie Finster Nickelodeon's "Rugrats")
Priscilla Presley, Elvis's ex-wife
Sky Dayton, entrepreneur (founded earthlink, eCompanies, and Boingo)
Sofia Milos, actress (played Yelina Salas on CBS's "CSI Miami")
Sonny Bono, musician (Sonny and Cher)
Tom Constanten, musician (keyboardist for Grateful Dead 1968-1970)
basically, once you've done a few therapy sessions (called "auditing"), scientology has the ammunition to use against you in case you turn away one day. it's a very deceitful but effective ploy.