Guillermo del Toro created the Couch Gag for this years Treehouse of Horror episode. But you can watch it now, below. References to Hitchcock, Stephen King, Ray Harryhausen abound - not to mention nods to Del Toro's own films. Look fast and you might spot cameos by Rod Serling, Ray Bradbury, Klattu, Robot Monster and the Lost In Space robot. The annual horror show is broadcast on Fox this Sunday night (10/6).