Thanks for calling attention to Earth Hour
For those who wish to know more about Earth Hour, which started in Australia last year and went world-wide this year, there are web sites for the various continents. See www5.earthhourus.org/ for the Earth Hour link for North America.
Joking around is fine, but conservation is also serious business for all of us and the environment. Sometimes, symbolic acts can help educate people. I hope that is the case with Earth Hour. If you are turning off your lights, systems, etc., you are doing the right thing. Now, we just need to go in for solar theaters or wind theaters! No, not to pin your ears back with big speakers, but to power your homes and mine.
Speaking of which, wind and solar power are much more easily regulated than coal, for example. I don't know the facts about nuclear (read 'em and forgot). With the interconnectedness of the grid and the rolling, time-zone based and voluntary nature of the Earth Hour, I imagine that power will not go wasted- hopefully, much less of it will be wasted than normal.
Saving money is part of the whole equation. See greenchemistry.wordpress.com/2008/01/08/solar-power-now-cheaper-than-coal/ : panels made from the latest technology are cheaper than coal for generating electricity. So, as Germany has done and is doing, let's hope that we can ramp up solar power use all over the world. Let's also hope that the pollution in China from traditional polycrystalline silicon solar cells will cease! See greenchemistry.wordpress.com/2008/03/11/when-light-is-dark-waste-from-key-solar-cell-ingredient-damages-chinese-environment/
(no HD anything yet, but good 2-channel sound and a separate, modest TV/receiver system)