Cambridgenights.media.mit.edu

Cambridge Nights is the best source of interviews of scientists intended for a general audience that I've seen online. Each interview is about 45 minutes long, which is just long enough to explore each scientists' work. The host is a scientist himself, C茅sar A. Hidalgo. He does a fantastic job of selecting interesting guests, asking probing questions that cover the important bits of the scientists' work and keeping the discussion at a high level that is interesting to the viewer. Hidalgo also examines the scientists themselves–their upbringing and career progression, which is fascinating and useful for kids who might be aspiring scientists.

So far, my favorite interviews are with Lant Pritchett (international development, education) http://cambridgenights.media.mit.edu/index.php/2011/lant-pritchett

And also with Juan Perez Mercader (astrobiology) http://cambridgenights.media.mit.edu/index.php/2011/juan-perez-mercader