CGSociety have a nice article looking at the technology of CryEngine 3 that sits squarely behind the stunning visual feast that is Crysis 2. I have been enjoying the game itself, though you can feel the more 'consolish' nature of the mechanics etc. Things are much more linear than Crysis 1, which does feed the more cinematic experience, but I somehow like the more open tactical approach. THe visuals are astounding, to have that much going on in front of me is something to behold.
Here are a few more videos showing off the pedigree of CryEngine 3: