Spy vs Spy
 

for anyone out there with xbox, they just released an absolutely hysterical remake of spy vs spy from nintendo. you can play it online also. its great. i played it at work (since i dont have xbox) but i recommend anyone who has an xbox to get it! you can customize your spy to wear different costumes like a santa outfit, spartan hat, clown suit...all kinds of stuff. very nostalgic game.