Arcadia is the best theatrical experience I'll ever have (aside from Les Mis, which is all emotion). Arcadia is a mind f*ck and one that wins you oner again and again. Personally, I hope them don't make it into a film because it really only works on stage, or at least I can only see it on stage. Film would use to many tricks, the simplicity and immediacy of theater makes it work. It is brilliant though.
I just heard Flatland is getting the animated treatment. That could be good. I know that's a leap from Arcadia to Flatland, but I read both in my Chaos Theory Class in college.