This is a pretty good program called, "This American Life," but wait until
you have a lot of time to listen to it because it's long like close to 2
hours. It's about echo locating which is the skill of blind people getting
around by clicking with their tongues to let them know where they are. I am
skeptical of it, but in his case, it has produced some results. I didn't
download it, I just listened to it.
Blind ham Bob Ringwald has a very brief segment in it, and the NFB is
briefly mentioned.
Harvey
https://dl.dropboxusercontent.com/u/1582135/10_%23544_%20Batman.mp3