...speaking of tech demos (http://forums.righteouswrath.com/index.php/topic,6514.msg41838.html#msg41838), WOW! The new S.T.A.L.K.E.R. title looks unbelievable, not just realistic but immersive to a degree never before seen!
http://ve3d.ign.com/videos/play/31827/PC/S-T-A-L-K-E-R-Clear-Sky
Perhaps this thread can be used for links to videos as they are released showing the next "next generation" games that looks bloody fantastic...