In Springfield: Deposed children's show sidekick Sideshow Bob returned to try get revenge on Bart for the first time; Lisa learns about corruption in Washington.
Beyond Springfield: President George H.W. Bush says "We are going to keep on trying to strengthen the American family, to make American families a lot more like 'The Waltons' and a lot less like 'The Simpsons.'"
Notable guests: Michael Jackson (credited as John Jay Smith), Neil Patrick Harris, Magic Johnson, Aerosmith, Sting, Spinal Tap
Season rating: 12 million households