It really was! It made me want to go back and re-watch the first season, when everything was fresh and new and fun. I think one of the things that really made this episode work for me was that Sam and Dean's interaction was different -- not only were both actors playing their characters a little differently from normal, but they basically had to get to know each other all over again, and it was neat! I haven't felt like writing fic for this show since the second season, but I'm actually spinning plot bunnies in my head now for a whole "Sam and Dean, demon-hunting office workers" AU. It could work!