Great game! Who says Macs have no games!
My copy of Guitar Hero 3 arrived today. Plays great on my original Intel Core Duo iMac even though specs say it needs the Core 2 Duo. Also plays perfectly on my new Macbook Pro as I would of expected. Game is addictive, so promptly spent rest of the afternoon and evening playing it after it arrived. If you have a Intel Mac with a real graphics chip (so not Mac Mini, Macbook, or Macbook Air). Then this game is a must, even if you think its not going to be your thing.