Last month I replaced my old lightbulbs with energy efficient ones which put out the same amount of light that a standard 60 watt bulb puts out, but only uses 14 watts. I got my first electric bill since then and it is $4 cheaper, so the bulbs have already paid for their higher cost. I don’t use a lot of electricity since I’m in a 1BR apartment, but I heartily recommend getting your hands on some of these bad boys. More beer money!