Homme, who is fifty-three years old, first saw “The Exorcist” when he was twelve. His parents weren’t home. “My brother was supposed to watch me, and, of course, he didn’t,” he said. “I started it at around six-thirty. The sun went down, and I’m in my parents’ waterbed, just gently jiggling. Sheets and blankets pulled up to my nose. And this movie just happened to me. I couldn’t get up.”