Osu! Tatakae! Ouendan. (Nintendo DS)
The first game from the insanely awesome rhythm game series* that was responsible for more broken stylus' and shredded screen protectors than any other portable game in history.
Don't believe me here is a video of the first game's final song...
http://www.youtube.com/watch?v=9e_sl...eature=related
And yes for you sharp eyed listeners out there that is the theme song to "Full Metal Alchemist"
(*Some of you may be familiar with OTO's American cousin Elite Beat Agents.)