The Simpsons and U2: two of my favorite things.
I grew up watching the show (much to my mom's chagrin, not exactly an appropriate show for a 10 year old to watch!) and remember all of the episodes with musical guests. At the time, I either didn't know who U2 was or didn't care. Same with the episodes they did with The Who, Aerosmith, Tom Petty etc. It was nice re-watching those after I became a fan of the music and picked up on all of the references to songs within the episodes.
The U2 episode, in particular, is a favorite of mine. The episode itself is a lot of fun, many quotable lines, interesting story line and Steve Martin is great as Ray Patterson. U2's role in the episode just adds to the funniness--the fact that Homer gets beat up during an empowering song like "Pride" is hilarious. And Adam's weird obsession with spoons? A funny little touch.