Yeah, I just picked up the Season 9 BD set and I will watch it until the new season starts. I forgot that Bobbie made an appearance in the first S9 episode! I still think it was a mistake to kill Bobbie off.
Talking about series running too long, Supernatural really should have ended after Season 5. It was the perfect ending and the last episode was extremely strong, with prophet Chuck narrating the episode and recapping the series. The ending montage that ran right before Sam took over his body from Lucifer was priceless, and the depth of the characters and their journey was fully realized.
After that season, the big bads were never as good and many plotlines were recycled. However, for me, I still enjoy the rapport that the remaining characters have and I prefer to watch this show as opposed to Dancing with the Stars and the rest of that ilk.
Sorry, sermon done.