Zune Insider says that programming from “educational” TV network PBS is available starting today from the Zune Video Marketplace.  Shows available for download include public television viewer favorites: Ken Burns’ Jazz, America and American Lives; NOVA, Wired Science, Scientific American Frontiers and, later this week, Carrier.

For even more intellectually enriching Zune content (edutainment?), the Zune Luv podcast and blog recently listed some resources for free audiobooks for the Zune from Audible, eMusic and Overdrive.