The following video is a bit old but still educational. It features Bill Mollison (the "father" of Permaculture). In this video is Joe Bullock, a former student of Mollison's and one of the featured permaculturists in Gaia's Garden. Also in this video is Robert Hart (author of Forest Gardening), the first known modern person to create a Temperate Climate Forest Garden. This is one of the few videos focusing on Temperate Climate Permaculture. Be sure to watch all four segments.