open source legal documents

I need to draw up a lease agreement for my duplex, and I'm having a bit of a rough time finding a good one online.

It occurs to me that the open source movement, or perhaps creative commons, should draw up "open source" legal documents. Contracts between independent coding contractors and businesses, leases, wills, you name it. Take the lawyers out of this business and open it up to the people.

The fact that I've thought of it means that other people have had to have thought of it as well. The question is, where is it? I'm looking around on google now, but if any of you know of a resource like this, please let me know.