Zachariah : Which Character’s Scenes Are Getting Repetitive?

While the animosity between dean and zachariah in the ensuing scene did allow for some amusing banter, their scenes are getting somewhat repetitive ("you threaten me, i threaten you, yadda yadda *yawn*. "), but thankfully - going by what happened towards the end there - we shouldn't be hearing from zachariah again for some time at least. i thought it was a nice bit of continuity for dean to use the sending-the-angels-to-the-outfield blood symbol that castiel had taught him.i admit i'm one of the people who has never been that 'wowed' by the character of bobby.