I've just finished viewing Geoff's Harvesting Water the Permaculture Way DVD and its excellent. If you've ever wished you could bottle your favourite PC teachers, this DVD is your dream come true. The DVD is not organised in a methodic, instructional way, but is instead a brief documentary following Geoff around as he designs a dam, swale, and spillway for a client in Australia. I've had lots of questions about designing landscape for water. I've done a bit of reading, and have bothered Darren D in person a few times, but watching the process from start to finish really cleared up a lot of the concepts. Geoff's pace is relaxed, and you think he's not explaining things rapidly enough to fit it all, but by the end of the DVD you realise just how much has been explained. I really appreciated how Geoff doesn't just show up and pull a "guru" on everything - wisely discerning subtleties of the site and telling everyone what's what. He may be able to with his experience, but instead he thinks, asks lots of questions, looks, asks more questions. He's even wrong once or twice. But he doesn't worry about it and just slowly absorbs the details of the site, leading him to understand it at a level that allows him to execute an excellent design. The DVD is professionally produced, and injects useful graphics at appropriate times to explain with pictures some of the things Geoff is explaining verbally. Extras on the DVD include Geoff describing some projects as we view photos of them (very informative), a interview with Geoff, and some more of the Greening the Desert story. I'm not sure if Geoff would cringe, or if this was intended, but after viewing this DVD a few times, you might feel confident enough to get out and actually design a water harvesting system on your own land. My only criticism of the DVD is I still have some questions. What's the name of the tool Geoff sights through to get rough ideas of levels? Since the level spillway length is only a fraction of the feeding swale length, isn't the water speed during spillover a big erosion problem? What do you do if you do end up at shale or sand as you dig your dam? All and all, highly recommended.