I don't know if anyone is interested in these lectures but, this years Reith Lectures (as well as previous ones) are available on the
BBC Radio 4 website.
You can listen to the,
here.
This years was very interesting, "The Triumph of Technology." Each lecture is followed by a Q&A session - questions normally from very bright people. There is some throught provoking stuff that raises a lot of questions.
In particular I found the Risk and Responsibility lecture the most thought provoking of all.