The WinnersYep. That's right. It's a thermostat. But if there's ever going to be a thermostat for the ages, the Nest Learning Thermostat--just released this fall and already selling out--will be it. This connected hockey puck of a thermostat looks beautiful and lets you program by simply turning the body of the device, or by operating it from your smartphone. A motion sensor lets the thermostat "see" when people are usually in a room, and its artificial intelligence improves home efficiency automatically. Wow.