A company called Sphero already does this (without the cameras), and it's controllable with an iPhone: http://www.gosphero.com/ http://www.gosphero.com/ A com

A company called Sphero already does this (without the cameras), and it's controllable with an iPhone: http://www.gosphero.com/ http://www.gosphero.com/ A combination of the two technologies would be very cool.