The Simpsons have been nailing their couch gags for the past few years, often bringing in special guests for one-off guest animations. The recent Rick And Morty couch gag was brilliant, and horror legend Guillermo del Toro contributed a couch gag full of inside jokes and references back in 2013. The latest animator to get a spot in the show's opening sequence is Ren And Stimpy creator John Kricfalusi, and man, did he deliver.

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Watch the "Treehouse Of Horror" couch gag below, and see if you can identify the name on the tombstone from which the monster arises. Hint: it's not Dr. Marvin Monroe.

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