The Podcast is not merely a "broad"cast medium. It can also a connect us and provide context otherwise unavailable.
One interesting way this plays out is in Slate.com's "Unauthorized" Audio Tours. The first is for the MOMA. Yes, it's 11 mp3s. But, it's a big museum. I like the idea that at the least this is another perspective on the MOMAs collection. Makes the museum new to me even if I've been before.
I wonder what other similar applications this might have. Tours of San Francisco from the F Market? Weekly podcasts of the goings on in Chicago from people in-the-know? Freshman "initiation" at Colorado State?