The picture may not look like much today, but it is amazing. What you see are moving, colliding, bouncing balls. Tonight I wrote a physics engine for sphere collision in 3 dimensions. It rocks. I am pleased. So look at the picture as a tribute to the greatness of physics.
If you want to see it go, you can download the stuff here. You can add more balls if you like. The first two supplied begin with velocities, one to the right and the other up. Put balls in their paths and boing away.