Infinity Ward has out-done themselves.
Presentation: The main menu is pretty ordinary. But what other game has you executed in front of thousands of people?
Graphics: Modified version of the graphics engine used in Call of Duty and Call of Duty 2. It looks surprisingly good.
Gameplay: Just like the other Call of Duty games but with weapons of the 21st century and you no longer melee with the but of your weapon, you know use a knife like a civilized man.
Sound: Sounds better than any other Call of Duty, and now with cooler British guys.
Lasting Appeal: Online is awesome and will keep you playing Modern Warfare for hours on end.