What band/musician/song is your guilty pleasure?

My guilty pleasure via my iPod is Lady Gaga. ^_^; What can I say? It's a bit funny though when I lend my friends my iPod so they can to some CCR or The Band and 'Just Dance' pops up, they just give me a look that's worth a thousand words making me crack up every time. ^_^ So what's yours, my muffins? ♥