Nate: Sorry, if I came across as critical ... I wasn't criticizing you, but the P5 software really. (Other than the posterized-time of the animation that is.) I've seen a lot of bizarre results utilizing the Firefly (aka Stoned Slug, FireFlake) renderer, and was curious as to what settings you used, which may have caused the anomolies. I realized it was a test, but again was curious if collison detection was turned on and P5 wasn't handling it correctly, or what. Keep up the good work and keep experimenting ... it's the only way to learn.