Craig Mundie, Microsoft's chief research and strategy officer, is on a tour of U.S. universities this week, meeting with faculty and students at Princeton University, New York University, the University of Michigan, UC Berkeley and UC San Diego. One of the technologies he's showing is a prototype Tablet PC application that mixes online services and PC-based software -- demonstrating one way the company sees its "software plus services" strategy working in educational settings.

Here's a video of Jonathan Cluts, Microsoft's director of strategic prototyping, previewing the technology for me a couple weeks ago on the company's Redmond campus. As noted toward the end of the video, the company says this is purely a prototype, with no immediate plans to turn it into a product.