Free Academic Podcasts

This site has a list of 145 (to date) links. Says the site author: "About a year ago, I put together a listing 30 or 40 free podcasts of lectures from Universities. When I started putting together another list, I was amazed at how many more lectures are available. The lectures in this list are all free and don't require any type of authentication--you don't have to be a student to download them. The links are to the rss feed of class lectures. If you copy the URL and in iTunes click on Advanced > Subscribe to Podcast it will automatically download the lectures and new ones as they become available."