The Simpsons season 11 episode 4
Episode title: Treehouse of Horror X
In "I Know What You Diddily-Iddly-Did" the Simpsons fear they have killed Ned Flanders. "Desperately Xeeking Xena" satirizes superheroes of yore with "Stretch Dude" Bart and "Clobber Girl" Lisa. And "Life's A Glitch, Then You Die" depicts the upcoming horror of Y2K.