Listening to Podcasts always brought good things to me. Not only entertainment, but knowledge and sometimes deep understanding of subjects.
A great example of educational programmes is [CRE](http://cre.fm/cre200-stadtplanung) (German only) by [Tim Pritlove](http://de.wikipedia.org/wiki/Tim_Pritlove) who, in his 200th episode, talked about city planning with Thomas Stellmach. In this episode, Thomas mentioned a great piece of film by [William H. Whyte](http://en.wikipedia.org/wiki/William_H._Whyte) called The Social Life of Small Urban Spaces.
I strongly encourage you to take an hour of your day and watch it, if you are in any way interested in architecture or human centric design.
Sadly, the Video isn’t available on vimeo anymore. You can still [buy the book](http://www.amazon.de/Social-Life-Small-Urban-Spaces/dp/097063241X/ref=sr_1_1?ie=UTF8&qid=1389308482&sr=8-1&keywords=the+social+life+of+small+urban+spaces) though.