Smart thermostats are becoming pretty interesting. You can access the ecobee Smart Thermostat from wifi, and they also have mobile apps, which makes remotely controlling your thermostat easy.

Amazon has the ecobee EB-SMARTSi-01 Smart Thermostat 2 Heat-2 Cool with Full Color NON-Touch Screen for a low $181.79. The next lowest price is $210 (plus shipping) at ebay.