Felt I had to write a review to balance out the one negative review on this episode. The episode deals with Bear meeting someone else who is another guide to him on his journey, in the excellent Graham Greene. Greene's portrayal is moving and so full of depth, even in a series that has had some very touching portrayals. In a way it reminds me of the episode with Willy Jack and her dad, just taking a breather and letting the characters grow.
The episode does have a few really good laughs, as always, but it's the emotional heft of it that makes the show what it is. One of the best episodes in my opinion, to which you're allowed to disagree, but this is exactly why I love this show so much.