Mesh Slicer v1.9 (Cube Steak Edition)21 Dec 2008
Sooner than expected, this version covers bullet-point 2 of the previous post:
Adding extra faces to the cut-up meshes to make them closed shapes again would make the whole thing feel more “physical” and less abstract-graphics-demoey...
Adobe's Kuler service is being used to generate the color scheme, which I find quite exciting. Because it saves this particular demo from a world of red and black -- which are basically the only colors I use when left to my own devices. (Press [C] to cycle through colors) Thanks to Aden Forshaw for the AS3/Kuler example.
Finally worth noting is that the 'physics' have improved a little. I was previously using vertex count as a proxy for mass. Using the bounding box volume ended up being a better way of faking it.