COD4 is a GREAT game.

If you have not played it yet, just go buy it. You wouldn't be let down.

I dont even own an Xbox, however I'm always at friends houses and they all have it, and all play together. My best streak was 19 kill streak playing Domiation on Ambush. I dont own an xbox, and i'm still so great at COD. I love that game. If i had an xbox, i would not go outside. Ever.