devices all over the world, causing widespread destruction and societal collapse. Clark is revealed to be an android who turns to dust at midnight. Krusty's malfunctioning pacemaker kills him in front of the family. Bart tearfully mourns his hero, but perks up after finding a letter in his pocket, which states that a rocket is being prepared for humanity's "best and brightest", and will carry them to Mars to preserve human civilization. When they reach the rocket, Homer fails to bluff his way on board but the guard recognizes Lisa as the ship's designated proofreader. Lisa is only able to take one parent with her, and at once chooses Marge. Homer and Bart find a second, unguarded rocket and board just before it launches. They quickly notice that it is filled with second-rate celebrities such as politician Ross Perot, radio psychologist Dr. Laura, film director Spike Lee, former vice president Dan Quayle, grunge rock singer Courtney Love, skating champion Tonya Harding, civil rights activist Al Sharpton, actor Tom Arnold, MTV VJ Pauly Shore, and comedian/talk show host Rosie O'Donnell. This rocket is headed directly for the sun. Just as O'Donnell leads the passengers into a rendition of "The Trolley Song" (all while flinging Koosh balls), Homer and Bart decide they cannot bear being with those passengers any longer and eject themselves into space. Production "Treehouse of Horror X" was directed by Pete Michels and written by Donick Cary, Tim Long and Ron Hauge. It originally aired on the Fox network in the United States on Halloween, 1999. "I Know What You Diddily-Iddily-Did" was conceived and written by former staff writer Cary. In the DVD commentary for the episode, Cary said that he came up with the segment after watching the 1997 horror film I Know What You Did Last Summer. "I had just seen the movie and I was like, 'Hey, there you go.'" he said. While Flanders serves as the segment's antagonist, the role would originally go to Grampa, who would chase Homer inside a roller disco. While Grampa does not appear in the segment, the Springfield Roller Disco is seen during the Simpsons escape from Flanders. Despite serving as writer for the segment, Cary left the series after finishing the first draft in order to work on an animated Austin Powers series, which never came to fruition. In his absence, the writing staff rewrote the last quarter of