The course Historial Jesus is presented by Thomas Sheehan, professor at Stanford and the author of, among other titles, The First Coming: How the Kingdom of God Became Christianity which is currently out of print but available The Secular Web. Neither an evangelical/fundamentalist nor an non-believer, Sheehan's exegesis is sophisticated, thorough, and thoughtful.
The other course is Dr. Stephanie Spehar's Physical Anthropology class at UW-Oshkosh. This course deals with hominid evolution in a very accessible manner, though I suspect having her PowerPoint presentations to follow along would make it even more enjoyable. She has a course on the Evolution of Language I'll be listening to soon as well.
Plus, while double-checking my links for this post I came across the very interesting The Do It Yourself Scholar blog which is written by Dara.