At first I thought it was kinda... well, interesting, but it had no plot. It was just episodes of the boys hunting things without a string to dangle along, only some minor comments and such. But for the last few episodes, when they reunited with their father John, found the colt, and actually faced the demon, it was very, very good. I guess as a basis for any further seasons, it was absolutely great, so I'm excited to know what'll be next. There were a lot of questions left unanswered!