Today at the Worldwide Partner Conference, Office 2010 will be opening up the tech preview to tens of thousands of people. This iteration of Office brings great collaboration tools and a web client that you'll be able to use simply by keeping your docs up on Skydrive. That means almost half a billion people will have access to free online Office apps at launch. Senior Vice President of the Office products, Chris Capossela, stopped by the Channel 9 studios to tell us about Office 2010, what his favorite features are, and how we'll all get a chance to try it out. Chris Bryant follows with a walk-through of Office 2010 and a look at just some of the new features. For more information, go to www.microsoft.com/Office2010/....