I'm going a little overboard lately with the videos of scientist speakers. What can I say? I get a kick out of super-brainy people who are able to make their messages accessible to a wide audience, and actually express their true excitement about science. It's not something you see every day, unless you're in third grade.
This is an interview on the Rachel Maddow Show with Dr. Neil deGrasse Tyson, director of the Hayden Planetarium. He's the astrophysicist responsible for demoting Pluto from planet to "icy body" (although it's now "King of the Icy Bodies" instead of just the puniest planet, according to Tyson.) He's also author of the book, "The Pluto Files," on which the documentary of the same name was based.
If you can't see the video, click here.