I Am Legend opens this Friday; the Will Smith vehicle is the third adaptation of the famous science-fiction story by Richard Matheson. No stranger to Hollywood, Matheson has been working in television and cinema since he got his first job as a writer with The Twilight Zone. In this interview, he discusses his long career, his relationship with everyone from Rod Serling to Roger Corman, and the astonishing feat — which not even Stephen King can match — of having every single one of his novels adapted into a film. — Leonard Pierce