I subscribe to TED Talks and just received their latest selection of video links. Biologist Willie Smits started off with the goal of trying to save the orangutans of Borneo, but along the way he has succeeded in creating a viable recipe for regrowing the rainforest, turning around the lives of the local population, and even changing the local climate. The orangutans are doing fine too.
Though he doesn’t mention the word ‘permaculture’, he’s achieved this by applying permaculture principles. This is a really inspiring talk.