Gil's LotD
http://www.windows.ucar.edu/tour/link=/earth/Atmosphere/tornado/radar_history.html The history of Radar
http://www.pbs.org/speak/speech/beastly/ This one I thought was pretty interesting. I think I got most of the words on that list right, but that could be because of my midwest accent. In a moment of introspection, I realized that it would show quite a bit about the kind of friends you associate with by judging their reactions if you corrected their pronunciations.