Sphero Robot

Via Business Insider:

Sphero, the little robotic ball that you control with smartphone, is alive and well at this year's Consumer Electronics Show in Las Vegas.

Orbotix, the company behind Sphero, set up a fun little obstacle course at CES to let people give it a try.

Click the link to see more: Sphero Robot - Business Insider

If you watched Patrick McGoohan in The Prisoner, this will remind you of Rover.