this is the first of my new psy jelly material renders, since i restarted this project about a year ago.
i'm pretty pleased with the results, although i could only get raytraced refractions and fresnel to work, if i also enabled mirror reflections, blender would crash. not sure if it is a bug in the 2.66 version i'm using, or if i'm doing something wrong?
if any blender users know the answer, please post.