We were interested in watching the behavior of the Voronoi cells over "time". We set up a problem with 10 generators, with weights 1, 2, 3, ..., 10. We started with random initial locations for the generators, and carried out 100 iterations of the CVT code.
To make this movie, we saved a PPMB file containing an image of each step, converted these to JPEG files with consecutive file names, fed that into QuickTime Pro to create an animation, and saved the result as an MPEG-4 file.