A must own game for anyone who hasn't played GH before.
The graphics don't really matter since you will be focusing on the notes as the shoot down the screen. The soundtrack rocks (pardon the pun).
Like I said you really have to experience this game. I have spent nearly 100 hours playing this game (PS2 verison) and I still have fun. The Xbox 360 version improves on everything. This game is a must buy for any serious rock fan or anyone who is into rhythm games.