I would like to highly recommend the podcast series 99% Invisible produced by Roman Mars in Oakland. It is self described as “A tiny radio show about design, architecture & the 99% invisible activity that shapes our world.”. The Podcasts range in length from 10 to 30 minutes and are totally fascinating. You can learn more about it at  http://99percentinvisible.org. Check it out. This kind of effort deserves our support. It is partially underwritten by AIA SF.  You can get it through the iTunes store  for free.