Pros: Gameplay, graphics, sound, great multiplayer.
Cons: Some minor glitches.
The bottom line: I recommend this game to anyone who likes Ghost Recon or this genre. If you don't like either, you should at least rent it and give it a try.
Note: this review is for single-player only (as I do not have live connected yet).

Gameplay: Ghost Recon Advanced Warfighter has some of the best gameplay I have encountered. The controls are very easy to pick up on and very intuitive, even the command structure for your squad and support elements, which cover from armored personnel carries, Bradley fighting vehicles, Abrams tanks, Blackhawk helicopters, Apache attack helicopters and a support drone, which allows you to receive advanced intel on locations. The new cover system is great. You can go against the wall and when you get around a corner you peak around to see what’s around the corner without exposing much of yourself. The only real complaint I have is that you’re squad AI isn’t all that smart all the time, sometimes they can do something stupid like run around a corner without seeing what’s around it, and the result of that is that you’ll have to medic him. There are some glitches in the game, too, such as looking like you’re flying when crawling prone up a hill, but these glitches and problems don’t happen all that much so it’s not that big of a deal.

Graphics: The graphics are some of the best I’ve seen ever. The character models look superb, the Ghosts as well as the rebels, and they all have very realistic movements. The vehicles, that you command, not fully control like Battlefield, are also beautiful and pretty close to the real thing. The urban environment also looks great, very realistic, makes you feel like you are in Mexico City. The lighting is also worth mentioning, as it gives a feeling of being in a near-equatorial environment, by having blinding sunlight and high contrasted shadows.

Sound: The sound is also very good. The weapons all sound different and like how they should. The combined sounds of the weapons, yours and the enemies, combined with the support elements, make for a very great and immersive feel, especially for those that have surround sound.

Ghost Recon Advanced Warfighter is a great addition to an already great series and is a must-have for those who already love Ghost Recon and/or modern war games, especially the tactical kind. For those who don’t care for this genre or series, rent it; at least give it a try.