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.)
The two games I wish I could play for the first time again are Dragon Age and Bioshock.
The events that transpired at Ostagar, man, got you into that game REAL quick.