Gel Conference (CC-by-NC-SA) http://gelconference.com/videos/
Academic Earth (Licenses are vary for each video, but many of them are CC.) http://academicearth.org/
videolectures.net (CC-by-NC-ND) http://videolectures.net/
Khan Academy (CC-by-NC-SA) http://www.khanacademy.org/
MIT Open Courseware (CC-by-NC-SA) http://ocw.mit.edu/
Open Yale courses (CC-by-NC-SA) http://oyc.yale.edu/
Stanford Engineering Everywhare (CC-by) http://see.stanford.edu/SEE/Courses.aspx
Stanford University’s Entrepreneurship Corner (CC-by-NC) http://ecorner.stanford.edu/
webcast.berkeley (CC-by-NC-ND) http://webcast.berkeley.edu/
Opencast Community (CC-by) http://www.opencastproject.org/
Lift Conference (CC-by-SA) http://videos.liftconference.com/
Randy Pausch (“You may use the video for non-commercial purposes without asking for permission.”) http://www.cs.cmu.edu/~pausch/
POPTECH (CC-by-NC-SA) http://poptech.org/popcasts
Google Code University (CC-by) http://code.google.com/edu/
Talks@Google http://www.youtube.com/user/AtGoogleTalks
Social Innovation Conversations http://sic.conversationsnetwork.org/
RSA (Royal Society for the Encouragement of Arts, Manufactures and Commerce) http://comment.rsablogs.org.uk/videos/
Microsoft Project TUVA (Richard Feynman’s lectures) http://research.microsoft.com/apps/tools/tuva/index.html
Charlie Rose http://www.charlierose.com/
99% http://the99percent.com/videos
Big Think http://bigthink.com/
Do Lectures http://www.dolectures.com/
FORA.tv http://fora.tv/
Mouvment http://www.mouvment.com/
Business Innovation Factory http://businessinnovationfactory.com/iss
IdeaCity http://www.ideacityonline.com/
Long Now http://longnow.org/seminars/
Ignite http://igniteshow.com/
Ontwik http://ontwik.com/
Sputnik Observatory http://www.sptnk.org/
Daily BR!NK http://www.dailybrink.com/
YouTube Edu http://www.youtube.com/education
MoMA http://www.youtube.com/user/MoMAvideos
National Geographic http://www.youtube.com/user/NationalGeographic
New Scientist http://www.youtube.com/user/newscientistvideo
Pulitzer Center on Crisis Reporting http://www.youtube.com/profile?user=PulitzerCenter
Reel NASA http://www.youtube.com/reelnasa
American Museum of Natural History http://www.youtube.com/user/AMNHorg
Cambridge University http://www.youtube.com/user/CambridgeUniversity
Harvard University http://www.youtube.com/harvard
UC Berkeley http://www.youtube.com/ucberkeley
MIT http://www.youtube.com/mit
Stanford http://www.youtube.com/stanforduniversity
Yale http://www.youtube.com/user/YaleCourses
UChannel (Princeton) http://www.youtube.com/profile?user=uchannel
OreillyMedia http://www.youtube.com/user/OreillyMedia
Sixty Symbols http://www.sixtysymbols.com/
bilkent courses on the web http://video.bilkent.edu.tr/department_menu.php?lang=en
Harvard University’s Justice with Michael Sandel http://www.justiceharvard.org/
Personal Democracy Forum http://personaldemocracy.com/video
JR’s InsideOut Channel http://www.youtube.com/theinsideoutchannel
6 billion Others http://www.6billionothers.org/
Yann Arthus-Bertrand’s “Home” http://www.homethemovie.org/
Jason Scott Sadofsky’s talk at DEFCON http://ascii.textfiles.com/archives/3278
Intelligence Squared (paid service) http://www.intelligencesquared.com/talks
Google Zeitgeist http://www.zeitgeistminds.com/
Strange Loop (Vidoes of some talks are on infoq.com.) https://thestrangeloop.com/
INK Talks http://www.inktalks.com/
Singularity Summits http://www.youtube.com/user/SingularitySummits/
Business of Software Conference http://businessofsoftware.org/prevyear.aspx
A Declaration of Interdependence http://connectedthefilm.com/interdependence/
The institute of Art and Ideas http://iai.tv/home/talks_and_debates/
Videos at the EDGE http://edge.org/videos