..FWIW, for those of you who haven't been enlightened with the power that Google Apps Script[1] offers yet, be sure to check it out: http://script.google.com . Layered on top of Spreadsheets, this pair takes prototyping to a whole new level. [1] https://developers.google.com/apps-script/
However I do enjoy the API. It's wonderful how easy it is to prototype an idea and get it off the ground with minimal effort.