Unplug appliances when not in use! This may sound inconvenient, but it is worth the savings. We don't unplug everything, but we do unplug chargers and such when not in use. We have the cheapest electric bill of anyone that I've met in our neighborhood (those with the same house plan). I know that part of our savings has to do with the fact that we unplug items.
Go do an energy audit and see what you can unplug :)