Conspiracy Theory: He's A Satanist
In the hiatus between Star Trek the TV show and the Star Trek movies, Shatner's career wasn't so hot. He made some B-movies and lived in a pickup truck. Then, in 1975, he did a movie called The Devil's Rain. Shatner's character in the film is converted into a Satanic puppet by Anton LaVey, the real-life High Priest of the Church of Satan. Did down-on-his-luck Shatner make a Faustian bargain? In any case, his next movie was a box office phenomenon, and a surprise success to boot: Star Trek: The Motion Picture.