When we heard the iPod's creators were planning a new product, we surely weren't thinking about HVAC systems. Yet here we are, staring longingly at the Nest Learning Thermostat ($250). This gorgeous, intelligent gadget learns from your habits, programming itself in about a week and using its colorful display to help you learn more energy-efficient and money-saving habits, while sensors keep track of whether or not you're at home, and a Wi-Fi connection makes sure every Nest in your home is aware of the other and the weather outside, so it can understand how the changing temperatures affect your heating and cooling needs. You can even control it over the web via a computer or iOS device. Sure, $250 sounds like a lot for a thermostat, until you realize that it's controlling half of your heating and cooling bill.
[Scouted by Andrew & Jeremy]