One of my biggest wishes with umbracoStats was that people would extend it with new reports and it has already happend! Daniel Bjørnbakk has created a very nice little report that shows you what pages in umbraco that hasn't been published yet - a pretty neat tool for webmasters:
And Daniel is always a friendly chap when it comes to sharing, so ofcourse you can download this report and use it yourself - thanks Daniel! :-)