I was pleased to stumble across a site today that shares the spirit that gave rise to Download the Universe. New Books in Science, Technology, and Society is a series of interview podcasts conducted by Carla Nappi and Patrick Slaney of the University of British Columbia. It's got a strong academic flavor, compared to, say, Fresh Air or Book TV, but the books cover some fascinating topics, ranging from Copernicus to the flu.
--Carl Zimmer (hat tip to Misc.ience)