Every year fans of The Simpsons wait in great anticipation for the “Treehouse of Horrors” episode in honor of Halloween. Just a few hours ago, Fox released the opening to this year’s offering– XXIV if you’re keeping count. The couch gag this year was created by Guillermo del Toro, the man behind Hellboy, Pan’s Labyrinth and this year’s Pacific Rim. Check it out below and be sure to pick out all the references and homages. There’s a lot! And be sure to tune in this Sunday at 8 pm ET on Fox.