"You read that book I gave you? Dioretix. Science of matter over mind. You better read it. And quick. That book can change your life." -Lite

Sy Richardson's character in Repo Man, Lite, gives this fictional book to Emilio Estevez' character, Otto. The cover of the book can be seen onscreen for a few seconds, and the author's name is obscured by Otto's arm, but you can see "DIORETIX: The Science of Matter over Mind by (lambda) Rum Bobb-." This is an obvious parody of L. Ron Hubbard and his book, Dianetics, upon which the Church of Scientology is based.