We're suggesting a Hellraiser Treehouse of Horror segment mainly because we think you could easily call it "Heckraiser" and have someone along the lines of Ned (he has already played the Devil after all) step in for Pinhead. A character no one would expect. Lenny could work as well. The setup: Bart purchases a mysterious box at The Android's Dungeon. A puzzle box. Opening it unleashes The Simpsons versions of Pinhead and his Cenobites. Of course, you'd have to tone down the violence and gore, but everything else works out.