No Such Thing as a Fish - No Such Thing as a Mousetrap-Remote-Control - The original use for bubble wrap and more bizarre facts

This is probably my favorite podcast (though, to be fair, I'm a total trivia buff). The hosts play off each other really well, mostly because several of them are also professional comedians, and the facts are almost always good. The whole story of graphite in particular was pretty interesting. Didn't know there used to be a graphite cartel.