Thinking that it would somehow scare away burglars, I always leave the light on in my room every time I go to work. It's on for over 10 hours a day, 5 times a week. I don't turn it on while at home though, because I love total darkness when I'm asleep. In fact I have covered all my windows to avoid sun light from getting in, in my attempt to mimic the dark night during my sleeping time.
Today, I'm gonna be adding one hour to my usual lights off routine.
Hope everybody will do the same. Let's vote Earth. Let's all support Earth Hour 2009.