One of my buddies just got the game (he still lives at "the frat house" despite being in his 30s) and all the guys are going over regularly to play it. They love it.
They sadly commented that it was "too bad" that the drum kit and actual instruments I had in the basement couldn't be hooked up to the game
Love it. I bet I get a few of them sitting down at my drum kit in the near future.