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Tom Cruise is either the most popular actor in the world or the most controversial — maybe both. Known as one of the most reliable actors in Hollywood, Cruise had a string of blockbusters, from Top Gun to Rain Man to A Few Good Men. Cruise is also a mainstay of the summer movie circuit. His personal life is popular as well, from his marriage to Nicole Kidman to his whirlwind romance (and eventual divorce) with actress Katie Holmes. But he is also known as the most high-profile member of the Church of Scientology, a controversial church that many call a cult. Cruise serves as a vocal ambassador for the church, often defending it in interviews.