R2D2 has a predecessor and it’s much nicer than you would think. Its name is Rezero and is a dancing ballbot. Péter Fankhauser, Roboticist at the Swiss federal institute of technology in Zurich, leads a team of incredibly skilled students that worked on this robot.
Rezero uses a ball for locomotion and the gyro systems makes him move and stand gracefully in front of the people. The live demonstration that has been done July 2011 show the robot balancing, following the people around and even dancing.
Far beyond utility this robot may actually get a grip on some people here and there. We may even use such robots for transportation in the future or have them as virtual assistants in a Muzeum. Possibilities are endless. Nice one guys!