I'm not really into the habit of playing games I don't like, but Guitar Hero takes the cake for me. It isn't really so much the game, but rather that the songlists are almost utterly devoid of anything worth playing.
From what I hear, the game already has some notable modding teams from HW2 making stuff for it. I think that's a good sign for the modding community.
Anyways I just ordered this game. I think it'll be one that I quite enjoy.