Lister Sinclair (long time host of Ideas on CBC radio) when asked how he wanted to be remember said I would like people to say "that he died learning". I guess this is true of me to, for as long as I can remember I have wanted to know. The subject doesn't matter all that much I just like to know things.
I have lost hope in educational TV. The learning channel is now more concerned with trading spaces and what not to wear than the are in good documetries. The Discovery channel seems to going a similar route. The History channel spend a lot of time showing old movies or war stuff which is OK but not all there is of History. Once in a while you get something on TVO or SCN but that is about it.
But now I have discovered podcasts and I am in educational Media heaven. I started with the CBC at http://www.cbc.ca/podcasting with shows like ideas and the current. Then I moved on to the Australian Broadcasting Corporation http://www.abc.net.au/services/podcasting/ which I have listened to on CBC overnight. I then went out looking since I am hooked and found this science program from the UK http://www.thenakedscientists.com/HTML/podcasts/. National Public Radio out of the United States has lots of stuff although it is usually not as good but still worthwhile http://www.npr.org/rss/podcast/podcast_directory.php?type=topic&value=1007#podcast1007 . I am sure I could go on for a long time but you get the idea.
Anyway I hope you can find something of interest for your mp3 player.
Happy Listening
Robin