I believe The Beatles: Rock Band came the closest to being perfect. Eveything about that game was just beautifully done and the only things missing was Pro Drums, an option for Keys, and a few more Beatle songs (Hey Jude, Strawberry Fields Forever, Yesterday etc. etc.)
Everyone says that…but I couldn’t figure out wtf I was supposed to do and I never left the intro level.
Granted I was sleep deprived and had no patience