I said it many times on the old boards but I really don't like this game. Personally as far as simple, effective war games go WaW was a million times better. It had everything you could want, history, unique weapons, gritty violence, interesting maps and zombies. MW2 was blown completely out of proportion, the weapons have no personality compared to the older games because they all look the same, the graphics look cartoony (very similar to Timesplitters), fair enough the game is set in the future but some of the attachments are completely stupid (heart beat sensor... come on) and the streaks are so over the top that the game barely involves any skill. They made it way to easy for n00bs. Not to mention the fact that the nuke is the worst streak idea ever.
All in all I played MW2 for a couple of days and really didn't enjoy it. On the other hand I'm still playing WaW to this day and it still feels as fresh as it ever did.