Simpsons Season 9, Episode 4: Treehouse of Horror VIII

A Halloween special which is divided into three short stories:

The HOmega Man – After the French strike Springfield with a nuclear bomb, Homer discovers that he is the only one who survived the attack, until zombies come after him.
Fly Vs. Fly – Bart uses Professor Frink's teleporter to turn himself into a fly.
Easy Bake Coven – In a 1600s Puritan town, Marge is accused of being a witch. She flees to her sisters' cave, where the three become the inventors of Halloween.