I don't post recs very often. I'm really, really bad at it, in fact. And when I do, I feel guilty, because there are dozens of great works I could be talking about right now. So I'm trying to do better.
First is All Your Lovers, which the amazing crowroad3 posted on my birthday (which still makes me hyperventilate a bit because I'm not worthy.) Like all of crowroad3's works, it's a gorgeous, lyrical, visionary-swirly-magical thing. And it's Trials!Sam, y'all. I could not possibly ask for more. None of us could.
And second is The Paper Asks Nothing, by ameliacareful (who doesn't seem to be updating her LJ any longer, so this is on AO3). This is about as different from Crowroad3's story as you can get. I'm trying to think of how to describe it and I keep coming up with words like spare and calm, which don't sound right and also don't sound flattering. The thing is, she has written some absolute gut-churning horror with a quiet, pared-down style which just makes it that much more horrifying.
And finally, how about some absolutely fantastic smut (not just smut but also sweetness and angst and yes there is smut-aplenty) by z_publicizes featuring Sam and a human version of the Impala?
If one of these fics doesn't make your day, I don't know what will.