This is "Simpsons" opening to end all "Simpsons" openings.

FOX asked "Pacific Rim" director Guillermo del Toro to create the couch gag sequence for the upcoming "Treehouse of Horror XXIV" special -- and man, he did not disappoint!

The video, which runs almost 3 minutes long, is packed with nearly every horror movie reference you could possibly think of, from the classic Universal monsters to del Toro's own wicked "Pan's Labyrinth" and "Hellboy" creations.

There's so much going on here, you may have to watch the video more than once before it all sinks in.

Stephen King, Edgar Allan Poe, Blade and even Pepper from "American Horror Story" all make cameos. See if you can spot them all above!

"Treehouse of Horror XXIV" airs this coming Sunday. 

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