Here is a test render/animation of some of the things that I have been doing lately. Click the image to view the video. The link might take a while to load, its about 12megs or so, so give a sec. But it only took about 12 hours to render 30 seconds of footage on my little iBook G4.
If you are interested in the source code, let me know and I will send it to you. I would post it, but I have been constantly working on it and tweaking it, and by the time I post it, I will have made some change to it. So just let me know and I will pass it on to you.