I really enjoy interactive math and science education. Recently, I enjoyed an opportunity to work with ExploreLearning on some science Gizmos. My actual science background is marginal at best. Because of my math/engineering experience, I can handle trajectories and Netwonian mechanics. I have virtually no experience with electro-magnetics or wave mechanics, so I was pleased to work with one of the science Ph.D’s at EL on a ripple tank Gizmo. His math model was quite robust, handling barriers and submerged rocks with variable depth.
If you are an educator, check out ExploreLearning Gizmos; they are great interactive tools for math and science education.
Ripple Tank Gizmo can be found here (coded in straight AS3).
The Algorithmist 
Ummm, wow. That is some damn sweet modeling. If I were doing client work that’s the sort of thing I’d be looking to do.
Thanks, man. I was really happy to work with a Ph.D. who understood the science to great detail. I understand coupled differential equations and discretization over a finite grid, but would have been very hard pressed to come up with a realistic math model in the time we had available.