Converts PowerPoint Presentations to Flash Video
Windows only: Freeware PowerPoint plug-in iSpring converts your PowerPoint presentation to an interactive Flash video with the click of a button. Not only is iSpring a great way to make your PowerPoint presentation more portable (not everyone has PowerPoint, after all), but as Digital Inspiration points out, an exported movie even preserves all of your slide transitions, animations, and hyperlinks.
iSpring is freeware, Windows only, works with PowerPoint 2000 through 2007.
Alternately, you can upload any presentation directly to the SlideBoom web site (which appears to convert and host Flash movies made with iSpring) if you don't want to host the presentation yourself.
***This post is not security related***