Justice

Michael Sandel, professor of government at Harvard University, spoke at the Harvard Book Store January 2, 2010, presenting the ideas he develops in his book Justice: What's the Right Thing to Do?
The presentation involves lots of interaction with the audience. You will feel pulled in too.
video, 55 min. no transcript
The Amazon page presenting the book has a short (3min52) video on it from Harvard University. On the Harvard site, you can find a longer (28 min.) video with excerpts from his class entitled Justice — starting with the classic trolley problems. Highly recommended.
Added later  - you can find videos of the complete classes (12 episodes) here. No transcripts, but readings provided by Professor Sandel can be found here. Sandel also provides discussion guides for two levels - beginner and advanced.