Call 3D "gimmicky" all you want (now let's count the posts with the word "gimmicky" in them ), but Crytek has absolutely NAILED 3D implementation. And not in obvious, useless, "things popping off the screen way" but in leveraging 3D's immersive possibilities by using INTELLIGENT art direction similar, I believe, to how James Cameron used 3D in Avatar.... it got to the point where you forgot it normally DOESN'T look this good.
It is the subtle things; debris floating by your face in the wind, the way the HUD does not sit flat on the screen, but angles into the monitor, the way the Nano suit appears layered in your view, the way the sun reflects off the water of NY Harbor when you first emerge to the roof. Absolutely wonderful.
I'm running pretty old graphics hardware (a pair of 280GTX's) and the FPS is rock solid even in 3D. Bravo to Crytek for designing an engine from the ground up that is made to utilize 3D without killing framerates and without having to rely on the graphics driver (as an aside, I forgot to enable SLI, so played the first ten minutes on the highest graphics setting only running on 280GTX. Framerate was flawless).
I guess I should be angry there is no DX11 support yet (even though my 280's can't use it), and maybe I don't have the same critical eye that some of the "leet" gamers supposedly have, but the visuals are absolutely beautiful IMHO.
If this game were on display in stores running 3D Vision with a good PC rig, I'm confident it would sell units just like Visicalc sold Apple ]['s back in the day.
Now I pray that devs license this tech and make more games with it.