The suggestion for today is a relatively new podcast, only up to episode six. Tales of Mythic Adventure is described on the Glorantha website as follows:
Join Jeff Richard, Michael “MOB” O’Brien, and special guests as they talk about roleplaying games, history, mythology, and, of course, the fantasy setting of Glorantha.
The focus of this podcast is on the setting of Glorantha, and features a series of interviews with various designers who have written for the setting. There is plenty of history and insight into the world, as to be expected from a talk with the influential writers who helped build such a rich setting.
As to be expected, this podcast is essential listening for any fan of Glorantha. The value to non-Gloranthaphiles is in exposure to the immense depth of the world. Plus, there is always merit to listening to game designers talk about their work.