Are you still using those silly looking CCFL light bulbs? Or even worse, the old school incandescent light bulbs? LED is the way to go for numerous reasons. They use a fraction of the energy, they run very cool and they last a long time.
The cost associated with LED bulbs has been an issue in the past, as those bulbs can be pretty expensive. But here is a fantastic deal that can get your whole house converted over to LED. Grab a 16-pack of Phillips 60 watt equivalent bulbs for only $25!