National Public Radio reporter Richard Harris asked an energy auditor from the American Council for an Energy Efficient Economy to visit his 100-year-old Maryland home to show him what he could do to cut back on his electricity use.

One of his observations is that the simple things add up over time: "I can make a difference with simple steps, such as installing low-flow shower heads and compact fluorescent light bulbs." 

You can listen to the segment online or read the transcript at the NPR site: Energy Conservation - Starting at Home. The page also contains some helpful hints about compact fluorescent bulbs and curbing energy use.