They're coming out with Wi-Fi light bulbs connected to your wireless network. You can turn specific bulbs on or off at any time from your phone (even from several blocks over) or adjust them to create mood lighting with them. But you can also program them (particularly lights on the outside of your home) to automatically turn on/off at specific times of the day. You can also set some of them to be motion-activated. They're LED bulbs so they supposedly consume very little power to boot. Biggest hurdles are purchasing the initial kit and about 20 bucks per bulb after that.