THere's a lot of small details that really help make the game great. Like when you get shot in the arm, your guy drops his gun for a little bit and then when he pulls it back up his aiming sucks.
THe graphics are really amazing, but it's nothing you couldn't get on a tricked out PC.
It looks especially nice on an HDTV. You'll think you're acutally in the game. On SDTV (normal) everything looks dull and blurry. It still looks nice, but not even close to the HDTV picture.