Sweet.

Years ago I wrote a simple 2D tool which would generate "aesthetically pleasing" designs based upon a set of rules and a genetic algorithm. Using a simple neural net and GA, it would generate lots of 'base level' designs, then allow the user to select the ones they liked and the program would 'learn' preferences and try and generate more.

The rules were basically very simple. Things like golden mean, circles (few), 3 levels of details, symmetry and some other basic layout principles, like edge detail are all used in constructing a simple graphic representation.

I could see how you could do something very similar, but in 3D (2 1/2 D) and create interesting forms like this: