The ones I have watched have been good, it’s a nice way to learn/recap on some intresting subjects. Be sure to check out the following:
http://webcast.berkeley.edu/courses/archive.php?seriesid=1906978270
http://webcast.berkeley.edu/courses/archive.php?seriesid=1906978271
http://webcast.berkeley.edu/courses/archive.php?seriesid=1906978272
via MarkWielgus.com
