My wife and I like to play Guitar Hero II as a family event.  Our son loves to rock out, dancing and jumping around while we do. It's the first Xbox 360 game where my wife is better than me.  Not by just a little bit- she's significantly better than me, chalking it up to her classical cello training.  Well I've marked down what I'm going to get her for Christmas already- Rock Band.  Adding wireless drums, a mic, and wireless guitar/bass to the mix and this could be the ultimate party game.  Check out this video. "Welcome to the Jungle" is a good start- now if they'd just license more music for both games, I'm ready to buy.