The AR.Drone is the first quadricopter that can be controlled by iPhone and iPod touch, I’m feeling lazy so just watch the video >:3
It looks plain cool, I can’t deny that, the only problem I see is your iPhone receiving a call while you’re playing with the queadricopter in a “dangerous” zone and your toy ends up in pieces (or flames).
For more info visit http://ardrone.parrot.com/parrot-ar-drone/en.
Follow my madness!