The Simpsons - Season 26, Episode 04: Treehouse of Horror XXV
Trailer
A long series of adventures re-live during the twenty-sixth season. The season begins with Krusty's conscience crisis, which made him decide to retire from the show after his father's death before agreeing to his career, and Lisa is concerned about Homer's health. On the other hand, Marge is forming a fictional soccer team from Homer, and Marge opens a big shop for sandwich work after she became a good sandwich at the Springfield Elementary School.
... the final segment, where the family is haunted by the ghosts of the Tracy Ullman Show-era Simpsons is a fun enough idea to make up for it not being incredibly funny.