I was kind of wary about this when I heard that it was going to be Bobby centric episode but it turns out I absolutely loved it. I enjoyed seeing some more of Bobby past's and the scene at the end with Bobby's best memory being of Sam and Dean smiling and joking around had me bawling.
I know a lot of Cas fandom is pissed that Bobby got a 'better ending' than Cas but in all honesty that feels right to me. Yes, Cas was important to the boys but Bobby has been with them their whole lives.
I don't think Bobby is going to die anyway. If he was I think it would have happened at the end of the episode rather than leaving it hanging.
I actually think this has been the best episode of the season so far.
1. Death's Door
2. Meet the New Boss
3. The Girl Next Door
4. How To Win Friends And Influence Monsters
5. Shut Up, Dr. Phil
6. Defending Your Life
7. Hello, Cruel World
8. Time For A Wedding
9. Slash Fiction
10. The Mentalists