Here at SPNN we utilize two different free video hosting sites, You Tube and Google Video. Those are just the tip of the iceberg though.
Internet Video Magazine has a list and a review of each of the currently available services. http://www.internetvideomag.com/ProductReviews/Services/FreeVideoHosting102.htm
Check out this site to find out what video hosting site is best for you.
SPNN will be having a how to use You Tube workshop for free on April 24. Members of SPNN are welcome to attend and get your video on the web.