I've recently come across this on XBLA. This game is so so good. If you've ever enjoyed a single 2D shoot em up then you must bag this.

Check this out:

The performance in the above vid is utterly amazing. If you've never played Ikaruga before you won't appreciate what he's doing, so go download Ikaruga and then watch the vid and feel blessed by the presence of god. The performance in that youtube clip is beyond anything I've seen in 30years of gaming.