Here's a 9-minute video interview I did with Ron Yekutiel, CEO of Kaltura, at the Stanford Summit in July.
Kaltura.com is an open-source platform, toolset and nearly free video hosting solution for small and large companies and nonprofits. (I think I have that right -- it's hard to explain what they do in a single sentence.) They're about to enable users to add video and widgets to Wikipedia, and they're working with MediaWiki.org as well. They also offer an extension that provides WordPress blogs with video abilities.