Here's a great video that shows one of the coolest new features in PowerPoint 2010 -- the ability to compare two presentations and merge them together:

You can even use PowerPoint 2010 presentation software to work on a presentation at the same time as other people in your organization, a practice known as co-authoring. We've got a great blog post about co-authoring here, or head over to Office.com for a step-by-step co-authoring article.

-- Erik Jensen