"Treehouse of Horror XII" is the first episode of the thirteenth season of the American animated television series The Simpsons. Because of Fox's contract with Major League Baseball's World Series, the episode first aired on the Fox network in the United States on November 6, 2001, nearly one week after Halloween. It is the twelfth annual Treehouse of Horror episode, consisting of three self-contained segments. In the first segment, a gypsy puts a curse on Homer, which puts everybody he cares about in danger. In the second segment, which is a parody on both 2001: A Space Odyssey and Demon Seed, the Simpson family buys a new house, who falls in love with Marge and attempts to kill Homer. In the third and final segment, which lampoons the Harry Potter franchise, Lord Montymort attempts to capture Lisa, a skilled magician, in order to drain her magic powers.

"Simpsons Tall Tales" is the twenty-first and final episode of the twelfth season of the American animated television series The Simpsons. It originally aired on the Fox network in the United States on May 20, 2001. In the episode, Homer refuses to pay a five dollar airport tax to fly to Delaware, which forces the family to ride in a livestock car of a train instead. There they meet a singing hobo who tells three tall tales which include Homer as Paul Bunyan, Lisa as Connie Appleseed and Bart and Nelson as Tom Sawyer and Huckleberry Finn respectively.