Matt Gunn is an Atlanta base photographer that's doing RC-based aerial photography.
"But only in the last 5 years have relatively inexpensive radio-controlled helicopters become large and stable enough to carry the weight of the heavy digital SLR cameras. With advanced automatic stabilization systems and GPS positioning, a purpose-built aerial photography helicopter can hover virtually motionless while a camera operator looks through a monitor and sees what the camera sees. This allows for extremely precise photography at a fraction of the cost."
Check out his site... he's got some interesting detail and really nice example of what RC-based Aerial Photography can do.