Is there a band you used to hate but eventually grew to love?

Which of your favorite bands did you completely dislike when you were first introduced to them? Back in '96, I was still riding the end of the grunge scene. When 311 and Korn first started getting big, I thought both bands were the most ridiculous thing I'd ever heard. But after their initial popularity died down, I somehow grew to love them and now I own all their albums.