On a super windy day at the Berkeley Marina, we demoed the ArduCopter FollowMe function (which is built in to the Mission Planner). That's me walking around with a laptop (with a $27 USB GPS dongle), and the copter follows me around like a pet robot bird. Then at the end I tell it to land itself, which it does.
Note that there's no RC control at all. This is all autonomous flight, with mission command issued with a point-and-click interface on a laptop. And in some serious wind, too!