Some Yale professors stimulated the neurons of fruit flies with laser pulses -- and were able to remotely control their behaviour, like tiny robots. At one point, they removed the heads of several flies and discovered it was still possible to sufficiently stimulate the remaining neurons to induce activity.
You need to dig the little vid clip, if nothing else...they got the headless ones to fly like this. The clip, though, looks like an out-take from the Ringu tape.
