U2 singer Bono's activism takes center stage when the Irish rockers make a guest appearance in the 1998 'Simpsons' episode 'Trash of the Titans,' which features Homer running for the job of Springfield's Sanitation Commissioner. Homer interrupts the Springfield stop of U2's PopMart tour during 'In the Name of Love' to talk trash to the gathered crowd, and Bono joins in, prompting the rest of the band to retreat to Moe's Tavern -- and U2's bouncers to beat up Homer.