I'm in the middle of Earth Hour but writing this on batteries (switching back to AC at 9:30). How peaceful and quiet it is. I got my children to participate although they're not used to all the quiet (no TV, no radio, no lights -- only candles and flashlights).
This should be something we all do more often. We in the U.S. waste so much energy with useless pursuits. We could move a little more slowly and own a little less and consequently waste a lot less and save the earth a lot more.