3D: Take a 2D (flat profile) aeroplane and fly stuff no real plane could or would, mostly on edge or hanging on your propeller.

cute one. Actually, the funny thing is that the full scale competition acrobatic guys are paying a lot of attetion these days to what RC guys are doing with their 33+% SA aircraft. The full scale guys are starting to modify their planes to be more like the models, and there ARE full scale guys doing some of the model "3D" maneuvers. Not many though, most full scale planes don't have the power-to-weight ratio or the control surfaces to handle it. So, while SA started out as models trying to do a better job of doing what the full scale guys do, the situation is coming full circle a little..