Gonna do the awesome elwarre 's meme, like the cool kids! I can't deal with 'favorite', I just can't coose one - but I will try to go for 'very beloved'......
Sorry, it's Destiel - though I also read some Destiel, and some if pretty awesome - like this one - Absolution by wolfling & omphalos Adventure, and Sam is part of it too because not-romantic relationships are important too.... - nicely done
3 - A favorite genfic
So many, but The One You'll Know By by roque_clasique - I cannot believe she almost didn't post it because she was just not pleased with it enough - it is gorgeous - the heat, the nonverbal interactions yes yes yes (despite the negativeish portrayal of kid-Sam)
4 - A fic that drew you outside your comfort zone
Definitely balder12's These Clothes Don't Fit Us Right. When I read it it I was almost completely Wincest monogamous, plus it involves a trope I am literally terrified of (cause of my ways). I still loved it, it was amazing and pulled me in, and got me into kinda shipping Sastiel along the way, too!
5 - A fic that's gotten less attention than you think it deserves
Gonna stay with balder12 (sorry if this makes you uncomfortable!) - her Mystery Dance is one of the best fics of fandom - a classic
6 - A fic that made you cry
Many, but the amazing Monster by Any Other Name... by brosedshield, lavinialavender and whereupon - probably my favorite parts are - the complexity of recovery and the disconnect between paradigms of a person recovering and a person supporting them? it is beautiful and I need all the fic like that, more!
7 - A fic that made you laugh
Again, many amazing fics, but omg, ash_carpenter's Anti Kink: Non Con - [read more]brought me so much joy - it is hilarious, and the only ever story I know that makes rape funny - so funny - for me as a survivor, ok :)) I mean - I've read a lot of scorching hot, or h/c, or recovery - but just joyously funny was amazing, meaningful and just fun :)) thank you for that if you are reading this, bb :)
8 - Your favorite trope and a fic that features it
Come on! But ok, some trope that I adore - epic canon-divergent aus for early seasons, and then just - rivkat's Only Sweeter.
Or just early season early season (I miss those so much I cried over it yesterday, I kid you not, so if you know really good fic for earlier seasons, please do send it my way) - like It doesn't mean you can explain the ocean by rageproofrock (check out applegeuse's podfic), and then there are astolat's Leader of the Pack or Worth the Wait....
9 - The weirdest fic you ever loved
Not so weird, but fleshflutter 's Incestuous Courtship, ans Astolat's hilarious Kings and Queens and Jokers, too And badbastion's And you would be the fool - hilarious and well written and sweet
10 - Fill in the blank category because I can't think of anything else