James Horner has been one of my favorite composers since high school. His score to Braveheart just about changed my life. Episode 1 begins with his haunting "Main Title" from Patriot Games. I've had this album in my collection for probably fifteen years. The whole thing's great and very Horner-esque. You can find the album on Amazon.
During the discussion, "The Drop" by Harry Gregson-Williams plays. It's from his score to Man on Fire. If you haven't sat down and listened to any of Gregson-Williams' music, you're really missing out. He composed the scores to Spy Games, the first two Narnia movies, Man on Fire, and contributed to The Rock (along with Hans Zimmer and Nick Glennie-Smith, if memory serves). I don't remember where I bought this album (I think I found it at a second-hand music shop), but you can find it on Amazon.
The "slow-motion, bad-ass walking" music that closes the episode is "Young Men Dead," by The Black Angels. This is their official website. I purchased the song off iTunes (after, yes, admittedly, hearing it in the Fable III commercial).
I highly recommend them. Add them to your playlists today.