Just in case you hadn't seen it: http://videolectures.net/ http://videolectures.net/ Part of the problem is that such videos are hard to find, and not usefully

Just in case you hadn't seen it: http://videolectures.net/ http://videolectures.net/ Part of the problem is that such videos are hard to find, and not usefully aggregated anywhere (a problem I am indirectly trying to solve ;).