http://www.bbc.co.uk/iplayer/episode/p009lfsk/Digital_Planet_14_09_2010/

Watch the video.

Researchers have figured out how to make flies control tiny robots
as they navigate obstacle courses. Is this the first step toward creating
micro-robots for surveillance?

They did it by immersing a fly in a tiny version of the matrix - they glued the
fly down, then placed it in the middle of a wraparound movie screen, flashing
LED's that made the fly think it was zooming around. As the fly sensed
"obstacles," which corresponded to obstacles in the course the fly-controlled
robot was in, the fly would bank to the right or left, and micro-changes in its
wing beats were recorded and fed to the robot.

http://io9.com/5625152/robots-controlled-by-cyborg-flies-will-be-your-next-surveillance-drones

http://www.gizmodo.com.au/2010/08/the-cyborg-fly-project-uses-a-tethered-fly-to-guide-a-robot-through-an-obstacle-course/