Here's the lowdown on 2007's Treehouse of Terror,
Mr. and Mrs. Simpson - Homer and Marge in a Mr. and Mrs. Smith parody.
E.T. Go Home - Bart and Lisa try to help Kodos return to his home planet, or at least that's what Kodos wants them to think.
Heck House - when Bart and his friends go too far in playing pranks on Halloween, Flanders turns the church into a Hell House that's a real killer.
The new Halloween episode will air November 4th! (always after Oct.31st, isn't it?)