The Rotman Institute of Philosophy at the University of Western Ontario is now live-streaming (some of?) their Speaker Series talks. Videos of Philip Kitcher's talk from last October is on their website. The next speaker in the Series is Kyle Stanford (UC Irvine). His lecture, 'The Difference Between Ice Cream and Nazis', will be live-streamed here on March 4 at 3:30pm EST.
This sounds like a wonderful idea. It would be great if more departments and research centers were able to do the same.