all lectures - useful

http://Academicearth.org
http://education.usgs.gov/common/video_animation.htm
http://education-portal.com/video_library/index.html
http://freevideolectures.com/
http://iTunes.Berkeley.edu
http://iTunes.Stanford.edu
http://lecturefox.com
http://ocw.mit.edu/OcwWeb/web/courses/av/index.htm
http://OCW.ND.edu
http://OCW.Tufts.edu
http://oedb.org/library/features/236-open-courseware-collections
http://scholarspot.com/
http://selfmadescholar.com/b/self-education-resource-list/
http://streaming.discoveryeducation.com/
http://videolectures.net/
http://WebCast.Berkeley.edu
http://worldlibrary.net/Collections.htm
http://www.4shared.com/dir/25834616/400fbf67/sharing.html
http://www.careervoyages.gov/education-videos.cfm
http://www.freesciencelectures.com/
http://www.learnerstv.com/
http://www.missiontolearn.com/2009/12/learn-foreign-language-online/
http://www.nachi.org/advancedcourses.htm
http://www.ocwconsortium.org/use/use-dynamic.html
http://www.oercommons.org/
http://www.openculture.com/2007/07/freeonlinecourses.html
http://www.ovguide.com/education.html
http://www.practisinc.com/interactive/patient-education-videos.php
http://www.rfid4u.com/services/freeelearning.asp
http://www.sba.gov/tools/audiovideo/deliveringsuccess/index.html
http://www.sba.gov/tools/audiovideo/Podcasts/index.html
http://www.sba.gov/training/index.html
http://www.schoox.com/
http://www.serve.org/nche/ibt/aw_video.php
http://www.ted.com/
http://www.varsitynotes.com/
http://www.videomd.com/featured_videos.aspx
http://www.youtube.com/user/carnegiemellonu
http://www.youtube.com/user/georgiatech
http://www.youtube.com/user/Harvard
http://www.youtube.com/user/ncstate
http://www.youtube.com/user/pennstate
http://www.youtube.com/user/stanforduniversity
http://www.youtube.com/user/uctelevision
http://www.youtube.com/user/UniversityofMinn
http://www.youtube.com/user/wesleyan
http://www.youtube.com/watch?v=81NeQJWGYJY
http://www.youtube.com/watch?v=K_wpunvbyKA&NR=1
http://www.youtube.com/watch?v=p32OC97aNqc
http://www.youtube.com/watch?v=SW3gJFrZ4hY
http://www.youtube.com/watch?v=tN3iNxr2bhk