http://corp.kaltura.com/
Kaltura is an open source video collaboration tool. It integrates with MediaWiki to allow wiki-like editing of videos. The software is open source and hosted on sourceforge.
http://www.mogulus.com/
Mogulus allows you to create a "broadcast channel" where you can stream live video. You can mix and match existing, pre-recorded clips (from camera, YouTube, files, etc) or live video from a camera (or web cam). It's television, but interactive.
http://www.kaltura.com/
Kaltura is a collaborative, online video editing software. YouTube meets Wiki or something like that. You can upload, edit, and publish video collaboratively. There's talk of the software being released under the GPL license.
http://www.studio-to-go.com/
A complete music / video creation / editing suite on a bootable CD. Awesome!
