I just installed F.E.A.R., and that seems to do a whole lot more with the engine than Q4. It's not quite good looking yet, but at least they seem to have tried. Remember how I always bitched at D3 and HL2, and how people should get their shit together and combine the lighting and the looks? Well, that's what they got close to doing. The environment looks less.. 100%-metallic.. and shadows can be something other than pure-black too. It's a bit heavy on the hardware, but take their concept and give it the attention to detail HL2 showed - and you pretty much get what I 've been hoping for, for a while now.
Fear is great. Especially the multiplayer, that is really fun!
Great a very scary single player too.
The game looks very well done, the distortion shaders they use are really cool looking.