6. Sonny Bono
According to the wife of Sonny Bono, a pop-star-turned-politician, he was at one time a devoted Scientologist. In 1991, Bono tried to leave the cult-like church, but the other members refused to allow him. His long association with the church started back in the 1970s.
In an interview, his wife acknowledged that her late husband’s fascination with the organization ended about two decades after it started. After Sonny’s death in 1998, the church even inquired if they could preside over the funeral service. This did not happen as they eventually lost out to the Catholic Church.