I've been growing increasingly disillusioned with rhythm games over the past year. It seems like the two major players - Rock Band and Guitar Hero - are doing the exact same thing, only with different music, and let's be completely honest here - the music isn't all that different. New titles like Band Hero and LEGO Rock Band rise up, only to ultimately disappoint when both again feature similar tracks and the same old gameplay.
Perhaps what the genre needs is a fresh title with unique music and an all-new way to play. I've certainly felt that need myself, and DJ Hero has satiated it completely. There's definitely room for improvement, but even a flawed DJ Hero is a breath of fresh air for fans of music games.