He has been such a stalwart character in terms of his own innate goodness, that part of me very much wants to see Sam have to face his dark side. He is a prideful man and that's never been looked at in the show. He has many, many wonderful qualities, but he's no better or worse than Dean and I would relish the opportunity to see Sam have to address his less qualities, as it were. If (and I say this with my eyes closed and toes crossed) Kripke and Co. think this through carefully, they could really do something amazing.

Which makes me want to start a prayer chain for the writing staff at SPN.