Official Google Blog: Opening Google Docs to users and developers via Gadgets and Visualization API
Praise be to Google - this is a simply amazing capability to allow you build a dashboard or scorecard reporting system for free!

To try it out, go into Google Docs and open up a spreadsheet. Click on the chart icon, and click ‘Gadget…’. Pick your gadget, customize it to fit your data, and then publish it out to iGoogle or to any webpage.