Do you have any idea what type of platform you'll be using (Wordpress, Joomla, TypePad, Drupal, etc...) to publish your site?
*Edit* - Oops, my bad didn't quite understand the question at first. Are you just looking for an alternative video sharing site? If so, I think MetaCafe is one. Here's a link to an article (it's a bit old, but some of the sites might be around) -
Video Publishing Online: Where To Share Your Video Clips On The Web - Robin Good's Latest News.
NMFD
