User blog:Morpheus3000/To whoever wrote the article "Bobby Singer and Castiel"

Just so you know, I know the first four seasons like the back of my hand (hey, where'd that scar come from?). And in the beginning of the fourth season Bobby actually does meet Castiel; they just don't get onto a first name basis because Cass knocks Bobby out with his angelic powers before confronting Dean for the first time.

I just thought you should know.