I like this list of "Fall Cleaning." Martha is all about getting ready for winter. She's got some great tips for getting your garden ready but Penny has a good list for inside cleaning. I like to think of this time as the "getting ready for the holidays and being hunkered down inside for several months" month. Therefore, you need to do some deep cleaning.
The one thing I'd add to this list is cleaning your trashcans. I like to make sure mine get a good cleaning with baking soda and an old broom (and some strong hose action) once or twice a year.
Check out the list.