Got free or cheap video content? You should have little trouble finding someone who'd like to host it for you. Try BrightCove, Google, or just announced from Andreesen/Homer:
Open Media Networks.
Steven D. Levitt: Freakonomics : A Rogue Economist Explores the Hidden Side of Everything
The Group of 33: The Big Moo : Stop Trying to Be Perfect and Start Being Remarkable
Several good vignettes on common them of being remarkable.