THE SIMPSONS: The season 12 season premiere "Treehouse of Horror XI" episode of THE SIMPSONS on FOX. THE SIMPSONS ™ and © 2000 TTCFFC ALL RIGHTS RESERVED.

THE SIMPSONS "Treehouse of Horror XI" airs Wednesday November 1 (8:00 - 8:30 PM ET/PT) on FOX. L-R: Marge, Bart, Homer, Lisa and Grampa Simpson. ©2000FOX BROADCASTING CR:FOX

THE SIMPSONS "Treehouse of Horror XI" airs Wednesday November 1 (8:00 - 8:30 PM ET/PT) on FOX. ©2000FOX BROADCASTING CR:FOX