The answer is our collection called Free Online Courses from Great Universities, of course. We spent some time this weekend adding new courses to the collection, and it now includes about 110 free courses in total. We've also made it easy to pop these courses on your iPod (or any other MP3 player). From our point of view, this is one of the most useful but comparatively underused pages on our site. So, if you haven't seen it yet, give it a look and share it with a friend ... or stranger.
Some of the new online courses listed here include: The Ancient Mediterranean World, The Roman Empire, Shakespeare, Heidegger, American Politics: Campaign Strategy, Quantum Mechanics, Crossroads of Earth Resources and Society, Introduction to Political Philosophy, Introduction to Psychology, Introduction to the Old Testament, and more.
If you want to find this page down the road, look in the Podcast Library on the upper right of any page. Then click on the link Free Online Courses.
Also, on a related note, you may want to peruse our University Podcast Directory.