Davor from the Center for knowledge transfer in information technologies/Jozef Stefan Institute wrote an e-mail, pointing to the videos of the ISWC and ESWC conferences. This institution recorded all talks at these conferences and put them online, a valuable resource if you are interested in Semantic Web.

Here is their message:
The videos are online a few months now and we believe that you would be interested in seeing them. They are published on our new video-educational web portal which has more than 1900 educational videos, including various tutorials, workshops, interviews. We hope you will enjoy in your lecture and will browse our portal...

• your videography: http://videolectures.net/leo_sauermann/
• educational portal: http://videolectures.net
• iswc06 conference: http://videolectures.net/iswc06
• eswc06 conference: http://videolectures.net/eswc06