There was a Twilight Zone episode about a guy who could record anything into his tape recorder and it would come true, and he could undo it by throwing the tape into the fire in his fireplace. When Serling finished his closing narration, the guy with the tape recorder said something like, “I’ve had just about enough of you!” and throws a tape into the fire and Serling disappears. I think it’s the only time there was any interaction between him and the characters.