Ok its been out a while now and to be honest if you are looking at reviews at this stage..........where have you been?
The game is fantastic, the best FPS game money can buy. The story is good and all the people complaining about the story being short need to remember 2 things:
1. Quality over quantity (would you rather have a crap story that went on for ages or a shortish great experience)
2. Try it on Veteran, I completed it on veteran and it is a great challenge. If you think your good at FPS games then you really need to have 1000/1000 gamerpoints on COD2, COD4 Modern Warfare and COD5 WOW.
Call of duty World at war has been out for a while now and was released a year after Modern Warfare yet most FPS fans will be playing COD 4...... thats how good this game is.
Online (xbox live not that rubbish excuse for a service on the PS3) you can go no wrong, having dark patches under your eyes at work will be a near daily occurence.
I see myself as a bit of an achievement w***e but the online multiplayer kept me from any other games for near on 9 months.
If you have Xbox live, then you cannot go wrong. I would buy this for £100 nevermind what it goes for now.