Douglas MacMillan over at Business Week brings us this article on Google’s 20 Hottest Tools. A cool list of many of the awesome things Google has been working on over the years. I have convered many of them, including Google Wave, Google SikiWiki and Google Patents. But this list contains some that I bet you may have not heard of including Google Heath, Google SketchUp, Google Mars, and Google News Timeline. Give the article, Google’s 20 Hottest Tools, a look over and learn more about all the awesome things Google adds to our lives.