A process by which a high quality movie or other form of media is made completely unwatchable because of how much the sequel sucked.
Jeff: "Jess wanted to watch the Narnia movies, but I'm going to pass."
Greg: "I saw the first one, but never saw the second one."
Jeff: "Don't bother, the second one totally ruins the first."
Greg: "Oh. Total Matrix effect, then huh?"