Our house was built in the '60s so its not as energy efficient as a new home. Luckily it was built with separate heating zones for upstairs and downstairs so I can program them separately. The new thermostats easily pay for themselves. Now I have to see how much cold the rest of the family can bear.
Our fuel oil company has made some noise about biofuel, but I don't think it will be any cheaper.
I have also thought of converting our wood fireplace to gas, but I hear gas is increasing as well, since that is what everyone is heating their McMansions with.