I just saw the Dave has pointed to a post from Chis Pirillo, asking for an OPML file of all of NPR’s podcasts. Funnily enough, I have been talking to people at NPR about doing just that.
I have an OPML file here, which lists all their podcasts.
Very soon (once I have ironed out a bug) I will use the alpha system at podcast.com to publish this. All I need to do is import the OPML, and then assign a subdomain, using the simple form (yet to be released) and bingo!! They’ll all appear within npr.podcast.com I did an identical process to create http://bbc.podcast.com