I'm hoping the folks at GreenovationTV get up and running soon. They've done a bunch of reasonable improvements to their 100+ year old house to dramatically reduce their energy and water usage. These are tips I could use.
Some things I've been thinking about that they did include adding insulation to the attic and going geothermal. They also mention doing an energy audit wither with a pro or an incense stick (Just hold it near a door and look for drafts!) What I don't know yet, is if we should insulate the basement ceiling. I think so, but the furnace is down there and gives off some radiant heat. The attic is definitely the priority for now.