Guitar Hero didn't really work. Not in terms of what Harmonix set out to do, anyways. Most people play the game and are psyched...to play more of the same, not to go out and buy a real guitar and learn how to play it. Having spoken to many real (and some professional) guitarists, they can't play Guitar Hero well at all, even on easy. Sad, no?

Rock Band could turn out to be a different story entirely. With drums, it's much closer to the real thing, can be upgraded to have 7 pieces (instead of the average 4) and real drummers play it and play it well. 

What about all those kids who've dreamed about being DJ's? Should we leave them out in the cold? No, says Activision, who recently bought out FreeStyleGames and now is working on DJ Hero. Meaning they're going to make a DJ Hero controller...

Yes, let the thought sink in. Activision and FreeStyleGames is going to have to make a controller that simulates mixing. Now this, I've got to see.