I was a bit put off by Al Gore's fear-mongering, high-rise graphs. He tried to scare us into change, while peering pensively into his MacBook, or whatever model it was (p.s. - Al was an Apple board member at the time!).
Meanwhile, this anonymous guy makes the most compelling argument for action I've ever heard. No rhetoric, no fear, just listen to it & you'll be spreading the word, just as I am: