This is a nice addition to the philosophy audio and video resources I recently listed. As far as I know, it’s the only complete Introduction to Philosophy course from a university available online. The course is taught by Dr. Daniel Kaufman at Missouri State University. It seems only to be available through iTunes University.
One more course that didn’t make the previous list is Introduction to Political Philosophy by Dr. Steven B. Smith at Yale. The lectures are available in both video (QuickTime) and audio formats (mp3).
Happy watching and/or listening!