Today I received an email from someone who enjoys my Artificial Life iPhone app. He included a link to an interesting article about an evolutionary robotics experiment in Switzerland that is somewhat similar in concept to what I am trying to do with my app - start with random behaviors and see what useful behavior evolves over time.
Here's a link to the article: http://www.dailygalaxy.com/my_weblog/2009/05/a-robot-hitler.html
If you like artificial life and AI systems, it's an interesting read.