I'm sure you guys know people who know how to do this... I think an app based-on and organized like the Tricktionary would be FANTASTIC. Imagine just going to the park and after working on everything you know for a bit you wanna try something new (or you even want to look at a way to make something you know better) so you just whip out your iPhone and look up some "Beginner/Advanced/Expert" tricks to try or whatnot.
I think it'd be awesome.