Just got my Shedd Aquarium membership newsletter in the mail which details their new media sharing site called Sheddheads. People can join this site and participate in the generation of content. I signed up and viewed a You Tube video of a Beluga whale giving birth.
This is a great idea, but it seems to have a limited focus. I'd love to see a site for all major museums to share content... sort of like a Flickr or YouTube with one stop shopping for quality educational content.