As we resume “Fog on the Barrow-downs”, Frodo comes to and finds himself trapped in a barrow with his friends unconscious beside him, arrayed eerily in the buried treasures of long-dead lords. For a moment, Frodo is tempted to flee with the Ring and leave his friends behind, but there is a seed of courage hidden in the heart of every hobbit, and Frodo isn’t just any hobbit. Also: halfling streaking, a listener question about Sauron’s massive blind spot, and we’ll take “Unflattering Names to Call Your Pony” for $200, Alex.