I know it seems like common sense, but if you are looking to save energy and money, plug your gadgets into a power strip with a circuit breaker so you have the ability to flip the switch off instead of draining energy. I suggest hooking up devices like your TV and DVR or TiVo to one strip (so they can stay on and record all your favorite shows), but keep everything else on strips that can be turned off whenever you leave the house for an extended period of time.

There's a neat site called MyGreenElectronics that offers a simple energy calculator so you can guesstimate what your electronic use means for your wallet by the minute, day, month, and year.