Heres a taste of what I get up to in my spare time.
I fly remote control multirotor aircraft via FPV.
With current equipment I have a range approaching 1km.
FPV (First Person View) involves transmitting a video signal from a camera on the aircraft to some video goggles.
This gives a pilots perspective from the quad copter and is rather addictive.
The same view is also recorded on a small HD camera for upload if it contains anything worthwhile.