Call of Duty 4, although not that new still has great playable appeal.
The graphics are awesome and the game play reasonable, not as good as Rainbow 6 Vegas, but not too bad.
The best part of the game for me is when you're in the C130 and using all that visual tech to seek out and powder puff the hostile's, or to use a quote from that movie classic, Navy Seals, "I vapourized hostile's".
The variety of 'tours' across the global got a little predictable, and like a lot of other similar games, going to the Middle East, then to the Eastern Block and so on, the locations were pretty enough, but when you're engaging the enemy you don't have time to smell the flowers.
All in all COD 4 is a well worth it game, enjoyable, smart AI and plenty of action.
I would certain recommend it on an Xbox 360, but being a PC Gamer a mouse and keyboard are my choice of 'weapon'.