Just got a 1600 points card today and it has been a while since I purchased anything from the Live Arcade. I see that they added a ton of new stuff since I downloaded anything last....just wondering what's good right now and if anyone can offer some suggestions.

I have a modded Xbox with MAME, so I'm not really interested in any buying arcade conversions unless it has some great Live multiplayer action. TMNT is a possibility but is there anything else I should look into?