I think this is one of those episodes I'm going to have to rewatch to really get. It was great to see Garth again, but I felt like--while Jensen did a great job--Dean's vitriol for Garth was disproportionate to the amount of screen time he's had. Like, if Dean had behaved that way toward Bobby, I would have gotten it. But even the 'maybe monsters are good' plot couldn't really encompass how much we as viewers know Garth. I feel like he's not well known enough to yell at? Not to mention that Garth is a delicate flower. DJ Qualls does a great job playing his vulnerability.