Off of the poll I picked Oasis because they're a fourth-rate Beatles cop with no more than a couple good songs and yet they're considered Gods in some places. I could also go for Tool... they're neat and all but they're barely a pimple on the face of music. If you're looking for heavy experimental music there's a million better places to go. Tool's never recorded a second of music that rivals anything Burzum's done except for his prison albums.
I also considered U2, but I don't think they're overrated. They're a great band and are rated accordingly. I just don't like the fact that their brand of inoffensive mellowed-out lite-rock has become synonymous with "rock n roll" in many peoples minds and in reference to bands like Radiohead and Coldplay. It's good music but it rocks about as much as James Taylor's softest moments.