For those of you who live with others who can't seem to remember to turn out a light in the house...motion sensors might be the answer!
Motion sensors are not just for an office setting, they are great for home use, as well. They can be used indoors or outdoors and they can either replace conventional light switches or be added to an existing light fixture. They are great for lighting just about any area, but are particularly helpful for those areas that you use only briefly, such as a storage room or closet, as they only stay on as long as you need them. They automatically turn off after a few minutes, which helps you conserve energy and are ideal for those in the house who need a little help in the "green" department.
(Source: www.greeniacs.com)