Ribbon Hero is a concept test 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. For additional challenges and the opportunity to earn more points, download Office 2010 Beta.
(Gregory Piatetsky, Editor: I think this is a brilliant idea for a learning game, especially allowing people to share/brag about their achievements with their Facebook friends).
Here also is Microsoft blog entry: Play Ribbon Hero and hone your Microsoft Office skills
Requirements: Vista or Windows 7 (32/64 bit), Office 2007 or Office 2010 (32/64 bit)
Limitations: English only, Works with Word, Excel, and PowerPoint only, Does not support versions of Office earlier than Office 2007