The latest episodes of "The Secrets of Harry Potter" podcast are #70 "Harry Potter and the Bestiary of Christ Part One" and #71 "Harry Potter and the Deathly Hallows Part 2 Movie Review."
You may want to refer to this blog post about the symbolism of the Four Houses of Hogwarts when listening to Episode #70: http://phoenixweasley.wordpress.com/2011/06/19/harry-potter-and-the-bestiary-of-christ-part-one/. This podcast is a discussion of the symbolism of the lion, eagle, griffin, badger, serpent, and basilisk. This one is definitely one of my favorite episodes that we have recorded this year.
The movie review (Episode #71) has a spoiler-free overview followed by a spoiler-filled discussion of our likes, dislikes, and in-depth analysis of their favorite scenes, actors and actresses, and Alexandre Desplat's music. It is a really long and very detailed episode.