Remote-controlled woman :)
Anyway, this is the deal: Your vestibular system controls your sense of movement and balance, and apparently it can be trown off-kilter by delivering two weak electrical currents to the mastoid (area of bone) behind your ear. Because when this happens, the body responds by shifting the balance toward the anode & if the current is strong enough it won't just throw you off-balance but will alter your course of movement.
At the 2005 SIGGRAPH computer graphics conference in Los Angeles NTT-researchers have shown a remote-controlled device to deliver these currents. And why is that cool? Well, just watch this remote-controlled woman