2. TOM CRUISE AND KATIE HOLMES
These actors were by far the best-known Scientologist couple before their split in 2012. Cruise was introduced to Scientology by ex-wife Mimi Rogers and credits the religion for curing his dyslexia. Cruise's second wife, Nicole Kidman, had their Scientology marriage annulled so that she could remarry in the Catholic Church. In 2005, Cruise criticized actress Brooke Shields for taking antidepressants to deal with post-partum depression. He helped to establish a facility in New York City that used Scientology principles to help 9/11 rescue workers who had been exposed to toxic chemicals. On Nov. 18, Cruise and Holmes were married in a Scientology ceremony in Italy with David Miscavige, head of the Church of Scientology, as best man. The couple has an infant daughter, Suri. They divorced in 2012 with Scientology cited as part of the reason.