Quadroptor, Quadrotor or Quadcopter or whatever names that are given on aerial vehicles with 4 rotors are making waves everywhere. Now, this Aeryon Scout is one of the best that I have seen (in terms of ease of use and capabilities).
With just about 1 kg, it can withstand strong wind, thanks to the gryoscope and all accessories can be easily snapped on. With its 10 times optical zoom, it can observe situation 2 miles away.
The best part is that by using the touchscreen interface, you can lock on to the target. Watch the video below.