Many years ago there was a show called Connections that aired. Each episode would begin with the host James Burke introducing an innovation or event from history and then through the length of the show would begin a mental travel through what might seem like unconnected events and developments, but with a payoff that would lead back to the initial innovation or event.
I spend a lot of time thinking about, reading about, and listening to things related to the hobby, especially related to Dungeons & Dragons. I know a shocker as this is The Evolving DM and all. There are some good podcasts out there that revolve around all aspects of the game, from how to get into being a DM to recordings of actual play sessions.
Learning About E. Gary Gygax