Treehouse of Horror XXIV (Season 25; Oct. 6, 2013)
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Intro: Okay. This is basically like the regular intro to normal episodes of the show, except remade with too many horror pop culture references to count, let alone try to list here. It was freaking awesome.
Oh, the Places You'll D'oh!: In a rhyming parody of various Dr. Seuss stories, the Simpsons kids have to stay home on Halloween because they all have the mumps. But Homer (as "The Fat in the Hat") shows up to help them have fun. But it ends up being... not fun, and certainly not kid-friendly. But it's a pretty amusing segment.
Dead and Shoulders: A box kite accident leaves Bart decapitated, and his head gets surgically attached to Lisa's body. It was just sort of okay.
Freaks No Geeks: Mr. Burns (or Burnsum) runs a 1930s circus & freak show. It was pretty decent, and I thought the very end was really funny just because it completely took me by surprise. (But I still enjoyed it when I rewatched the episode, even knowing it was coming.)