This is one of the links that I found on Mike’s list of sample work they have done in the instructional design department. It’s a “wavey liquid surface being hit by rocks.” You can use your mouse to alter the viewing angle, look under the surface of the liquid, and change the “look” of the liquid. Personally, I quite like the lava-like texture.
I think this would be a nice demonstration to show in a Trigonometry class, so that they don’t get the idea that all sinusoidal behavior is 2-dimensional. The modeling in the demo is quite good.