Saving money by reducing energy costs

I read a great article in Woman's Day, by Mary Hunt, that talked about simple ideas on ways to save money on your energy bills. I thought I'd share them here in a few bite sized chunks....

First it hit on how to save on your heating bill, normally one of the biggest energy expenses for households. Ideas?

• Apply weatherstripping - check if you need it by having a lit candle on one side of the door or window and a helper with a blowdryer on the other. If the candle blows out, you've got drafts and need to seal up!
• Insulate outlets and light switches with a specially made foam gasket.
• Turn down your thermostat. It's estimated that for every degree you turn it down for an 8 hour period each day, you can save about 2% on your bill. Try a programmable thermostat to help you remember.
• Only use exhaust fans when necessary. They can actually get rid of a houseful of warm air in about an hour, according to Habitat for Humanity.

Any other ideas that have worked for you?