Mad crazy monster mash on ‘The Simpsons’ VIDEO

Yes, it really has been 24 years since Bart started telling Lisa scary stories to honor Halloween in an annual tradition known as the ‘Treehouse of Horror’. The latest installment will air this Sunday.

And the show has pulled out all the stops, enlisting Hollywood director Guillermo del Toro (Pan's Labyrinth, Pacific Rim)  to do an opening sequence (or in the case of The Simpsons, couch gag) that incorporates just about every scary creature of the modern era. The blink-and-you-missed-it collage gets props for roping in genre authors from Edgar Allan Poe to Stephen King. There is fittingly a cameo for Alfred Hitchcock who gets Edna Krabappel to play Tippi Hendren’s part. Del Toro even employs a few of his own big screen characters. Hello, Hellboy.

Some are obscure, some are obvious. What’s your favorite horror reference in this scary encyclopedia?

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