More and more great educational stuff gets posted online every day. The Online Education Database (OEDb) just posted a list of 236 open courseware collections, podcasts (audio recordings) and videos. Thanks to Jimmy Atkinson who posted the link to this site on the SLED mailing list (of Second Life EDucators).
Photo Credits: Learn to fly here! by Nadya Peek on Flickr is licensed under a Creative Commons Attribution 2.0 License.