Participatory Culture Foundation
From the site "Announcing a new platform for internet television and video. Anyone can broadcast full-screen video to thousands of people at virtually no cost, using BitTorrent technology. Viewers get intuitive, elegant software to subscribe to channels, watch video, and organize their video library. The project is non-profit, open source, and built on open standards. Today we're announcing the project and releasing our current sourcecode. The software is launching in June."
This is turn key system the combines video, blogs and torrents. This could be a really powerful system for the easy distrubution of video content. I can see a huge amount of use for this, not just in teaching !!!