Treehouse of Horror XXII (Season 23; Oct. 30, 2011)
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Intro: Lisa, Bart, and Maggie return from trick-or-treating with a good haul of candy, but Marge makes them trade it for dental products. The next day she sends Homer to turn in the candy to send to troops overseas, but instead he takes it up a mountain to eat it. In a spoof of 127 Hours, he gets stuck under a rock and has to go to desperate measures to reach the dropped candy sack.

The Diving Bell and the Butterball: In a parody of The Diving Bell and the Butterfly (and later of Spider-Man), Homer becomes paralyzed by a spider-bite. And... I don't know what else to say. I didn't like it that much.

Dial D for Diddily: Homer tricks Ned into killing his enemies. I didn't like it that much.

In the Na'vi: In a parody of Avatar, Bart's mind gets transferred into an avatar of Kodos and Kang's people, in order to steal "hilarium" for Krusty the Clown. But Bart ends up mating with one of the locals. That's all I want to say. It was probably the best segment of the episode, but still just okay.

Epilogue: Everyone talks about preparing for Christmas, now that Halloween is over.