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Melty bLoOd Combos (http://www.youtube.com/watch?v=6bTSOymN5q0#)
Melty Blood is one of the best 2d fighters around, and it's based off of a Doujin Visual Novel titled Tsukihime. It's a fighter based heavily on combos, opposed to many fighters which are based on few attacks and or juggling.
It has a few arcade releases, a PC release and a PS2 port.
If you like fighters, highly recommended. Also, you can get LAN/VPN working so multiplayer is do-able, and a tournament would be easy to organize too.
Edit: It's not MW2 and it lacks 20 jiggilian polygons per krundle, must be a POS mirite?