Pew Pew Pew

Ikaruga was just released for xbox live. This is a fantastic shooter that has been released for just about every console since the Dreamcast. It is crazy hard with a great 'polarity' game mechanic. When you have your black shield up you can absorb black shots and use them to power up your own weapons, when you have your white shield up you can absorb white shots in the same way. Getting hit by the opposite color causes your ship to explode.

The graphics were great at the time, and have been updated for live arcade. They have also added an online multiplayer feature, and replays of the top 100 players games.

A bit of warning; this game is Hard (with a capital H).