This is an interesting service wirth some potential. It looks like it's brand new, fresh out of its wrappers. So, no promises, but worth a look. "PresentationTube provides an easy-to-use desktop software that synchronizes and record your webcam video, PowerPoint slides, freehand drawings, and screen text typing presentation... a simple online wizard to help presenters upload and publish their video presentations to our high-speed streaming media server." I tried it, but 'Create FLV failed' for some unknown reason. Maybe you'll have better luck.