Manufactured by Aldebaran Robotics of France, Nao Humanoid Robot has been widely used in robot competitions as well as by research institutions. The 23 inch high robot has sensors such as cameras, sonars, accelerometers, microphones, which enables it to do amazingly human movements. Now its makers gave it the ability to autonomously find its recharge station, plug itself to the outlet, wait for recharge, and then unplug itself again.   Watch the video:

  aldebaran robotics, nao