Depends on what you mean by a "new" episode, but there was a G.E. College Bowl episode from around 1960 that had a question along the lines of, "You are standing on the far side of Mercury from the Sun. How long will it take for your location to receive sunlight?," and the "correct" answer was, "Never, as Mercury always keeps the same side pointed towards the Sun." (I think this clip appears in the movie Diner.) A few years later, somebody discovered that Mercury rotates something like three times for every two orbits.