I picked up a copy of Ghost Recon yesterday at 6:00 after work.  I got home unwrapped it and didn't stop playing until midnight.  I didn't even stop to eat dinner because it was so good. 

The realism and the graphics are the coolest parts.  They paid attention to every detail.  Like when you switch weapons, your character doesn't just have another gun that shows up in your hand.  Your character actually puts his riffle behind his back, unclips his gun, and then pulls out his secondary weapon.  The graphics are unreal as well. 

The only thing that I wish was different is that you can do the same movements in online play as you can in the campaign.  You can do cool things like take cover, look around corners without exposing your whole body, and shoot behind cover in the campaign but in online play, those abilities disappear.

My gamer tag is big jame so find me online.  I will probably be playing and not getting done what I am supposed to.