These guys do a very quality series on R/C vehicles. In this one they test an Arduino based chipset that basically allows any RC plane or copter to become a drone (UAV). This video also shows how you can fly a quadcopter via First Person View (FPV) with a remotely transmitting camera and a goofy set of goggles.

I would recommend skipping forward to the bit where the copter is flying hands free. You will also see a demo of the FPV technology shortly: