A reader from nVNews website was able to videotape some Far Cry gameplay on NVIDIA's E3 booth, the game was using upcoming Pixel Shaders 3.0 patch running on a GeForce 6800.
Although it's not been cleared up what will be the actual visual difference of PS 3.0 on Far Cry (one of the few shipping games to take advantage of PS 3.0), from the video you can notice some realistic look of stones and terrain, couldn't say anything else for the rest of the graphics because of the quality of the film but an eye opener for sure, go and take a look yourself.