The Blind Cool Tech Podcasts at http://www.blindcooltech.com are quite interesting - podcasts for and often by the blind. From the FAQ:
What is Blind Cool Tech?
Blind Cool Tech is a podcast that brings some fun, education, and variety into your mp3 player. The show provides interviews, brings you along on sound seeing tours, and discusses life and cool technology, especially technology that blind people can use.
Their current selection of podcasts, all of which are downloadable from the site above as MP3s, include soundscapes (including a slow train, a thunderstorm, and others), the responsibilities of using a guide dog, tests of various recording equipment, coffee-making, recipes, and more. Sighted or not, a site worth checking out.
Click this link to visit The Blind Cool Tech website: http://www.blindcooltech.com.