After a few more rounds with it, here is what I think...
Graphics: Fantastic graphics. Looks fantastic with everything turned up (@ 1280x1024). The heat rising in the beginning looks awesome, and the smoke is incredibly realstic.
AI: The AI seems to be much improved. Your crewmates actually kill people pretty consistently. I sure wasn't to impressed with the allied AI in the first game. Same goes for enemy AI, much improved. Nothing like seeing a German pick up the grenade you just threw at him and heave it back at you. Priceless
Controls: Controls are pretty much the same expect for grenades. Grenades are now activated by pressing '4' (smoke grenades) and the Scroll Button on your mouse (frag grenades). I personally find this is a downgrade, but thats just because instinct keeps telling me go hit 4 for frag grenades, and I keep getting smoked. Would like that to be changed, but I can live with it.
Gameplay: Awesome. This is where CoD outshines all competitors. It feels like you are actually in the war. The sounds of war hit you smack in the face from the beginning and dont let up for a moment. This game will get your adrenaline racing for sure. The difficulty doesn't seem to be as hard as it was in CoD1, but maybe that's just me.
Overall: Definetly a must buy. If the retail version is more of this, I will be extremely pleased. Buy this!