As CFLs have been replacing standard incandescent light bulbs, so will LED bulbs displace the CFLs. They last longer, use less electricity, and don’t contain hazardous materials. Right now, however, they’re way too expensive ($40 to $80 for the ones described here). One of the LED bulbs in the linked article even has a remote that allows you to change its brightness and color, which is a bit over the top for my tastes. But CFLs were super-expensive when they first came out, so I expect the LED bulbs will drop to a reasonable price as well.