What I'd reallly like to do is get someone to fly their DF #4 inverted. Just mount the blades upside down, start 'em spinning while holding it upside down by the skids (ah, SuperSkids, of course) and let her go. It would add new meaning to the word 'unstable'
But, who can we get to try it? It would have to be someone brave; like someone who's not afraid to fly their 36 without a gyro.... Hey, thecheatscalc is always looking to try something different. Oh, and naturally I want to see some good video of it.