http://blip.tv/
A video hosting, remixing, etc site. They share ad revenue with producers 50/50 and allow you to sell your own ads for a 10% cut. Nice.
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.