Engage your students, energize a lesson plan, and save time using free tools from Microsoft you can download today. Some of these include Windows Live Movie Maker, WorldWide Telescope, Microsoft Photosynth, Bing Maps, Digital Photostory, Songsmith, Office Live Workspaces, Windows Live Skydrive, and Autocollage.
http://www.microsoft.com/education/teachers/guides/freetools.aspx