Here's one that you should not miss. It's titled Peace Attend Thee, written by anactoria; 600 words, Castiel/2nd person POV, about Cas and Sam and Dean and Hannah and grace and grief so much more. Her summary: A year after Dean sends you away from the bunker to save Sam, Sam calls you back there to save Dean. There is a symmetry to this that suggests completion.
And, purloined from my comment to the fic: This is the kind of piece where I read it and think, this is so beautiful. This is so unmistakable. This is so together and insightful and elegant and controlled--this is something I would like to write like, one day. Like, I cannot overstate how great I find this.
Reaaaad it! <3333