Ribbon Hero is a game for Word, PowerPoint, and Excel 2007 and 2010, designed to help you boost your Office skills and knowledge. Play games (aka "challenges"), score points, and compete with your friends while improving your productivity with Office. As a concept test, this add-in is not supported, but is an opportunity for you to try out an idea we are working on and let us know what you think.
If you want to learn the ribbon this is a fun way to learn it
You can get it here