I'm not sure if anyone's still interested in this thread, but just in case I thought I'd share a couple other interesting podcasts.
I've really been enjoying
The Great Books Podcast as a way to either relive classics or add more books to my shelf. Each week the host (an author for The National Review) speaks with a professor of English/Literature/Theatre/Classics to discuss a great work of literature. It puts a lot of works into great context and gives interesting related anecdotes. A relatively young podcast.
I'll also give a tepid recommendation for
More Perfect. The show's producers pick out important supreme court cases/decisions throughout U.S. history and discuss what went on, the arguments on either end, and the societal implications. Unfortunately, in the last several episodes they decided to start using a lot more sound-effects that seem almost condescending to the listeners. Like they have to use auditory wingdings to keep our attention. Mostly bugged the crap out of me.
Disclaimer: each of these two podcasts
tries to come at issues with a sense of balance. But you can clearly tell that they each have their own ideological slant, which can become annoying. I still think that they're well worth the listen, though.