The Simpsons Season 20 Episode 4 - Treehouse of Horror XIX

Opener: When Homer casts his vote for Senator Obama the sinister electronic voting machine instead tallies a vote for Senator McCain.

Untitled Robot Parody: Bart buys a possessed Malibu Stacy convertible for Lisa for Christmas. A Transformers parody ensues.

How to Get Ahead in Dead-Vertising: A group of ad executives discover Homer and his talent of killing celebrities. With the celebrities out of the way, the advertisers can use their likenesses and not have to pay royalties--That is, until their ghosts seek revenge on Homer.

It's the Grand Pumpkin, Milhouse: A parody of It's the Great Pumpkin, Charlie Brown starring Milhouse as Linus, Lisa as Sally, and Bart as Charlie Brown.