#2: Missing Starts (http://marie-de-sade.livejournal.com/10379.html) Sam finds a way to bring Dean and Castiel back from Purgatory. They are not the same as they were. (S8 AU, Dean/Cas, Sam/Cas, ends in OT3)

#4
my faves... too many to name, you're welcome to look on my delicious (https://delicious.com/bubblewrapstargirl/fandom%3ASupernatural) (I got pretty lazy with tags/summaries)
here are some really great ones tho i did mini-summaries for - means I was super enthusiastic:

Destiel
Honesty Is What You Need (http://archiveofourown.org/works/1387327)
Dean and Cas are cursed into only speaking in song lyrics, and if they're not honest with one another, they'll die. It goes about as well as you'd expect
Bring Me to Life (http://archiveofourown.org/works/834723)
HOW SEASON 8 SHOULD HAVE GONE, HOLY SHIT
Scheherazade of the Super Eight (http://archiveofourown.org/works/305603)
Dean doesn't know why angels keep recruiting him for impossible tasks. But they do, and now he's apparently the last chance heaven has--not only against Raphael, but against a dangerously unhinged Castiel.
Castiel, Genie of the Ring (http://archiveofourown.org/works/346587)
AU; Dean buys a kickass ring and gets Cas, angel-turned-genie as a result. They fall in love, of course :)
Firestarter (http://archiveofourown.org/works/1163184?view_full_work=true)
superhero au holy shit
Lost in Translation (http://balder12.livejournal.com/2485.html?style=mine)
Castiel teaches Dean Enochian. Dean teaches Castiel about American culture. Neither goes smoothly. So funny and cute!
Damned (http://archiveofourown.org/works/368695)
AU from Season 3!! so good-- introduces Cas before Dean's deal is due, so Sam has that to cling to whilst Dean tries to give up hope and Cas denies there's any salvation for him- because after all, Dean exercised his God-given gift of free will and he has no one to blame but himself for the consequences...
Trust In Your Unfailing Love (http://archiveofourown.org/works/696641)
Godstiel/Dean, AU of S7. Bizarre but fantastic.
Face to Face with the Skies (http://quidquoprose.livejournal.com/19782.html?style=mine)
This is one of the best stories I have ever read, and definitely the best destiel characterisation I have ever read. This is so much more believable and canon than the direction they chose to go on the show post S5. I am so glad I stumbled across this wonderful fix-it and I am literally crying my heart out because I was so afraid they were never going to get their happy ending. Just read it, it is perfection.
A Gift For The Fallen (http://deancas-xmas.livejournal.com/41538.html)
truly fantastic fic which showcases Cas' otherworldliness. Cas as seen through his interactions with his siblings, his duties and loyalties, and of course, how those bring him into conflict with the man that he loves.

Wincest
Pray Unto The Splinters (http://archiveofourown.org/works/545765)
don't read it, it will ruin your life, rip out your heart and eat it while you watch
I Can't Give You Anything (But Love) (http://archiveofourown.org/works/699201)
Future fic. Head canon. It's so damn beautiful, just read it
When You Put Your Arms Around Me (http://kroki-refur.livejournal.com/118581.html)
Sam gets very sick as a result of Dean setting fire to a witch's altar. And it may not be something that they can cope with. Written with a very good Dean-voice; cleverly bordering the lines of snarky-funny, and serious worry.

Other
Dean/Misha, Dean/Cas: Imitating Life (http://littlehollyleaf.livejournal.com/436642.html#cutid1) French Mistake season 6 au!
Dean/Benny: Lonely Too Long (http://archiveofourown.org/works/922708) I thought I'd saved this and was horrified to find I hadn't. It took me ages to find it again but it's so worth it. Romantic, gentle slow burn, domestic with hunting happily ever after. It's glorious.
Sam/Dean/Cas: Try This Trick and Spin It (http://cautionzombies.livejournal.com/14707.html?style=mine) this is basically like the angrier, pornier, angstier version of 'Apologies and other disasters' where there is less snuggling and more angry kissing and its awesome

Gen
And No One Sings Me Lullabies (http://dollarformyname.livejournal.com/44498.html?style=mine)
soulless sam and a six year old dean, omg
When Angels Fall (http://archiveofourown.org/works/846891?view_full_work=true)
BEST FIX IT FOR S8 OMFG.
Apologies and Other Disasters (http://archiveofourown.org/works/1033814)
the most canon almost-wincestiel I have ever read. Dean and Sam get Cas back, and the three of them spend a lot of time snuggling in the bunker. Kevin, Garth and Linda all move in too and its freaking adorable, the only thing missing is Charlie
You’re Not Just Whistlin’ Pixie (http://zannes.livejournal.com/24205.html)
Dean gets turned into a pixie and Sam has to deal with the consequences.
The Wellspring (http://scourgeofeurope.livejournal.com/38445.html) (Master List)
The best 'Sam&Dean as parents'/crossover with Dark Angel ever!
Everything a Ninja Knows, He Learned from Dean Winchester (http://jukeboxhound.livejournal.com/227814.html)
Operation: Geek Liberation. Dean frees Sam from his boring pastimes. Very silly.
Made in Taiwan/Welcome to Oregon (http://gretazreta.livejournal.com/5765.html)
Throughout Sam's time at Stanford he learns to decode the messages in the gifts that Dean sends.