I always liked Billy Joel, saw him in concert a few years ago, and he still puts on a great show.
Check out this Paul McCartney concert I was watching last night on Youtube. I can`t believe how great this guy still is at 60+ years old. Someone posted them but not in order, so you may have to do a search to watch them in order. Just start with #1 and watch one after the other, this guy is incredible. You would think by now he would be some kind of lightweight has been, but he completely kicks ass in this show.
http://www.youtube.com/results?search_query=paul+mccartney+back+in+the+us&search=Search