It is truly Epic, but some of the smaller touches that no one knew about are tres cool:
-an ingame iPod and music you can find ingame to play on it. There is also a podcast and there will be new ones weekly that you can only access ingame!
-If you have a bluetooth headset you can get codec messages sent to your headset so the game feels more authentic.
-Tons of interactive scnes where you hit L1 or X to see alternate scenes or views.
-The amazingly deep weapon system and war economy.
-Of course the gameplay, graphics and story sequences are just as strong as you expect.