a mix of new/old:
When You Want to Let It Go by
cjedwards - um, I might be enjoying this a little too much. Dean/Castiel. And no, it's not sweet and innocent. [Spoilers for 4x01]
Chosen by
inlovewithnight - gen Castiel fic. beautiful and hits you right there. [Spoilers for 4x02]
Our Own Shadow Hides Light by
dotfic - I can't even tell you how much I love this fic. Just READ IT. [Spoilers, 4x02]
dark_reaction's
The Flower Gleams - come on dude, a plant growing Dean NEVER GETS OLD.
No Fortress is So Strong by
kimonkey7 - I've just gotten around to reading this, but damn. I could kick myself for taking so long.