I'm really excited about this. I'm using some beta drivers that I got from NVIDIA (only Windows right now, but I can't complain too much). The beta driver (56.56) provides OpenGL 1.5, but they turned off all the GLSL extensions by default. There's a registry hack to enable entry points into those extensions, and of course I had to try that out!
It's really cool stuff. I made a couple simple tests that worked beautifully, and now I'm beginning on some GLSL support for NeoEngine.
It snowed here this morning. About three or four inches, which is sort of a lot to get in one night around here. Of course, most of it has melted by now. But it was still pretty cool.