This is something pretty damn spiffy – yet I don’t pretend to understand it. It combines two things I’m facinated by, and yet confused by: programming and genetics.
Basically, this guy wrote a program to randomly generate colored polygons, then compare the pattern to a target image (Mona Lisa, in this case), and mutate or keep the progams own code based on how much – or little – the output looked like the target.

Fairly neat, I think. It’s got some pretty pictures at least.

Genetic Programming: Evolution of Mona Lisa « Roger Alsing Weblog.