I just came across this website (via Everyday Philosophy at the Purple Bike Café) that is gradually releasing videos from what appears to be a comprehensive introductory ethics course by Michael Sandel at Harvard. I've read Sandel, but I had no idea he was such a gifted lecturer.
The aesthetic is a little weird -- the production qualities suggest daytime talk show meets Sunday preaching meets professional comedy. But the intellectual content is excellent and it's great to see a high profile philosophy professor grappling with highly motivated undergrads and using the discussion to help teach a course -- and a very large course at that. Lots of great ideas for how to teach certain issues. It's also a little eerie to get a peek inside someone else's intro classroom and see how he interacts with his students. I highly recommend it.