Podcasts for commuting to
My answer to Podcasts for commuting to on Ask MetaFilter
The BBC world service Documentary podcast features “the best of BBC World Service documentaries and other factual programmes” and is absolutely spectacular. The quality is uniformly high.
Just one example: The President and the Press examines the relationship of the president to the press corp over history, featuring interviews with veteran reporters... including a reporter who was present when JFK was shot.
99% Invisible is another great one for varied things that are generally interesting.