Just finished the Home Energy Audit that I signed up for at work and my house got a 99 out of 100. Woo Hoo! It's a great deal. For only $40, they do a blower door test, install any needed weather stripping, replace any incandescent bulbs with CFLs and a whole bunch more. If your house is in Minneapolis and you want a Home Energy Audit, let me know. I've got coupons for half off.