This works great! Easy and clean. BUT: must have Twitter account though and all screencasts are public.
A Dog's Day\nPowerPoint\n\nPowerPoint 2008 for Mac .pptx, 3,062 kb\nThis animated PowerPoint presentation was created by MacBU software tester, Jeffrey Weston using PowerPoint 2008 for Mac. While we admit that most people will not be using PowerPoint to make animated films, the principals and tools used here can be applied to your more traditional presentations. Be sure to check out the last slides for some special behind the scenes info on how to achieve these effects yourself!