I loved so much of what I read that I had to limit myself to Sam/Dean and J2, so here are a few of my favorites. This list is incomplete as all hell and not in any order whatsoever but at least I got something done before reveals! Yay!
In Case of a Flood Fic,Hard R
The Gift Fic, PG
It's a Terrible Apocalypse Fic, PG
Once More, With Feeling Art, PG-13
Even Batman Can Be Scared of Bats Art, G
Roxanne Red and Scribbled Hearts Fic, NC-17
An Afternoon at the Pool Art, PG
Forgotten Remnants Fic, PG-13
Promenade Fic, PG-13 Gen
Strange Love Fic, R
Mr & Mr Winchester Fic, NC-17
All That Glitters Fic, hard R
And last, but certainly not least, the glorious gift made for me which I love with all my heart and soul:
The Road Before Them Fic, NC-17
I've left comments on all of these (I think!) if you want to know what I think -- damn, there needs to be twice as many hours in every day!
This was an amazing experience! So much incredible writing, and I know I've only scratched the surface (looking forward to going back and reading more!) What a fandom!