The Lindau Nobel Laureates Meeting on the shores of Lake Constance took place between 27 June and 1 July, 2005. This exciting event brought together Nobel Laureates and young scientists - this year about 650 young researchers! The meeting was of an interdisciplinary character and therefore interesting to a wide scientific community. Some of the presentations given by the Laureates are available as video streams on the Internet.
http://www.lindau-nobel.net/component/option,com_artmedia/Itemid,96/
The World Lecture Project website contains a video library with links to audio and video lectures of each faculty and from all over the world; and with a search engine that helps you find the lecture of your choice. You can also actively participate in the creation of a global network for the interdisciplinary exchange of knowledge.
http://www.world-lecture-project.org/
The English version of the Diffusion des savoirs website is available. In this site, you can find the recordings of conferences, seminars and workshops given in non-French languages.
http://www.diffusion.ens.fr/en/