How about THIS? Robots playing soccer in our food supply.
http://www.techeblog.com/index.php/t...played-on-rice
This is a photograph of a soccer field for robots, part of the RoboCup games taking place though July 10 at Georgia Tech. There are various size brackets for different robots to compete in, and this particular field is smaller than a grain of rice (each of the �defenders� are about the width of two hairs), designed to challenge robots smaller still, called nanobots