I’ve been looking at these for a while, and I finally got around to compiling a list to share.

• iTunes U is a resource available through iTunes which grants access to thousands of classes and complete courses that have been podcasted from universities and colleges around the country (and the world).
• MIT’s OpenCourseWare is an example of the content available from iTunes U, and a great stand-alone resource for any student that wants to get a preview, or overview, of courses offered at MIT.
• TED offers videos of talks and lectures by prominent and influential teachers, thinkers, and artists from all over the world.
• Academic Earth offers a wide variety of courses and lectures in video-format.
• Video Lectures has a large selections of videos covering lectures in a broad range of topics.
• Free Video Lectures offers an RSS feed of newly-submitted videos to keep users up to date of their selection.
• Lecture Fox provides a list of available classes in the form of videos, audio, and notes.