I think I have hit the mother-load of free useful online documents.
A site called Docstoc is a user-generated site with hundreds, if not thousands, of different legal forms – all free to download. Users can share and upload their own forms as well as download any of the forms on the site. From invoices to anti-spam letters to business start-up forms to real estate contracts, there is something here for almost anyone who has a need for a legal form of some kind or another. They even offer flash previews of the forms before you download them. I gotta go back and investigate what all is on the entire site as I am sure there are a ton of forms I could use for both my blogs and my side businesses!