I second the Dollop, Im personally not a massive fan of their other podcast The Past Times after I had to listen to one episode that was them mistakenly defining the word "Fenian" repeatedly. But the best episodes of the Dollop are some of the best podcast episodes fullstop. Someone else in this thread recommended the 1908 New York to Paris Car Race episode, which is my favourite episode. The Rube is also another good one.