Tomorrow night (3/28) remember to turn off all your house lights at 8:30pm local time. Leave the lights off for one full hour. Be sure to turn off computers, TV's and electric radios too.
You can sign up here to prove your support, and be updated with the progress.
There is a kids web site for them to learn more about Earth Hour too. Click here for your kids to get in on the Earth Hour 2009 action.
Funny story about our family doing this last year. Ali had one of her friends over, and her parents came over to pick her up in the middle of Earth Hour. We were all sitting in the family room talking with candles lit all over the house. They thought we were a little strange until we told them why we were doing it. Then they sat and joined us for the rest of the hour. They are a eco-friendly family, and are always willing to try something new.
So, remember tomorrow 8:30pm local time, go off the electric grid!