I've turned several TED lovers onto Radiolab (not video, but great content sure to open your eyes, covers the intersection between science and culture with very well thought out themed episodes). When I listen to an episode I'm almost guaranteed a major WTF moment.
Actually, if you looked more carefully through http://freescienceonline.blogspot.com (the right sidebar), you'd find around 10 posts on computer science videos (not just two you linked to :))
"MIT World™ is a free and open site that provides on-demand video of significant public events at MIT. MIT World's video index contains more than 500 videos."
This really isn't intended for technical topics, but VideoJug.com is informative and hilarious. Videos are instructional, and include dating tips, reading body language, cooking, diy projects, negotiation, etc.
http://smashingtelly.com/
Quote from the site:
"Smashing Telly is a hand edited collection of the best free, instantly available TV on the web. Not 30 second clips of a dog on a skateboard, or the millionth person to mime the Numa song, but classic clips and full length programs, with a focus on documentaries and non fiction. Smashing Television, not Gimmick Television."
I've been enjoying them. The latest videos are from the conference held at the beginning of '08, so they aren't too old. Nat Torkington's, Peter Morville's and Luke Wroblewski's are all good and (often) front-end focused talks.
fora.tv is very good, although the talks aren't too technical. videolectures.net is highly technical though, and also very good (lots of interesting machine learning talks).
http://www.wnyc.org/shows/radiolab/