http://robocop.modmath.cs.cmu.edu:8001/
This site presents an interactive gallery of computer-generated art based on genetic algorithms. Three separate pages displays nine images that the viewer is asked to vote on. (The tallied votes are used as parameters for influencing the next generation of the image.) Each page has very different types of imagery -- tho all are abstractions. The mathematical formulas used can be viewed, and information on purchasing full-size prints can be obtained.