Unplug Everything! Well, within reason. I know in my home there are many items that could be unplugged, especially at night. The energy used by appliances and devices being left plugged in, while not in use, is referred to as Phantom Loads.
Some phantom loads are the lights on gaming consoles or PVRs, timers and clocks on appliances, computers in sleep mode, etc. They account for 5-10% of the average household power consumption per year.
Here is a video to explain and show how you can reduce this energy drain, and keep money in your pocket!
Here is a power bar option that will help when you have some devices you wish to keep on, and some to switch off automatically.
Check out these Smart Strip Power Bars: