Crysis 2 was pretty, but for hardcore PC types, in some ways, it wasn't pretty enough. It didn't push the limits of fidelity in the same way its predecessor had.
While most have moved on from the game, and if anything are waiting on Crysis 3, this texture pack turns Crytek's mildly pixelated New York into an almost photo-realistic New York. So it might be worth a double-back to investigate just how damn pretty it makes everything look.
You can see a comparison above (the one with the graffiti obviously being the updated version), while there are heaps more shots at the project's site below.