I played, and still play, lots of music/rhythm games.
Rhythm Tengoku/Rhythm Heaven series
Ouendan/Elite Beat Agents series
Dance Dance Revolution series
Rock Band series ( specifically 3 & Blitz )
Guitar Hero series
DJ Hero 1 & 2
Parappa The Rapper
Rez
Donkey Konga series
Wii Music ( easily the weakest of the bunch...only enjoyed the few Nintendo tunes & maybe 1 or 2 others )
HarmoKnight ( need to get the full game... )
Electroplankton
Britney's Dance Beat
Beatmania
My Gamefly queue currently includes the Hatsune Miku game recently released on PS3...
_________________
Ore Sanjou!