Karl Sims is a fairly well known name in areas of A.I., computer graphics, and procedural content generation he made his mark on the field with various explirations of evolutionary A.I, and wrote a pretty influential paper or two on computer graphics
Although evolutionary algorithms turned out to be less fruitful than initially promised there is still an undeniable brilliance and magic to these early videos. Some of their content was even used in music videos by Future Sound of London and Pantera. (No, Really!)
It is one of the key influences on my work on Eufloria. Have a look here and here.