One of my earliest fandoms, and I still love the books (and the third movie, though not the other two). My current pairings of choice are Remus/Sirius, Ron/Hermione, and Harry/Neville, though that'll probably change when the sixth book comes out in a couple of days.
Out of the Woods by Canis M. Okay, I love everything she's ever written. She's definitely my favorite for sweet, hot Remus/Sirius, and this is just...gah. Amazing. Post-GOF.
Hermione Queen of Witches by Arabella. The link is to the third book, becuase I find the first two somewhat boring - the second two, on the other hand, are just wonderful. Lots of R/H, lots of great Hermione snark. Fun for the whole family. Post-GOF.
Not As A Last Resort and Getting the Point by Arabella. Ron and Hermione in a Canadian Shack! Or, no. But still. Awwwwww. Post-GOF.
Smile and Nod by Sadie Dragonfire. Yeah, I love Protective Bonds, but I LOVE this story. My favorite kind of angst, and Lily, for whom I have had a soft spot since I slashed her. Post-GOF.
Subversion by TangledAria. Eeee! Snack! Er. Snape/Black. My bad. Anyway, this story is just wonderful. I mean, *I* loved it, and I haven't been able to read much HP for about a year now. Just a very cool, very IC story with just the right amount of pain. And hope, I guess. Post-GOF.
Inhabited by Winter by Yahtzee. I've finally recovered from Order of the Phoenix (and enamoured by the PoA movie) enough to be in this fandom again. This is a sad, very in character story about Remus and Sirius set during the latest book. Post-OOTP.
Mast Year by Halrloprillalar. Order of the Phoenix made Harry/Neville one of my new favorite pairings, but sadly very few people seem interested in writing it. This story is very cute, though. Post-OOTP.
Redeeming Time by Minx. I can't rec this enough. It made me incredibly happy to read a story in which someone actually addresses the whole "whoa, the Marauders really were assholes, weren't they?" thing. This is an R/S story, but it's more about James, really. Post-OOTP.
Second of our Reign by Wax Jism. All my OTPs are represented, and it's proabably the most plausible Harry/Draco I've ever read. And it's just beautifully written. Post-GOF.
Seven Things That Didn't Happen on Valentine's Day by Lupercali. All her stuff is amazing, but this story makes me laugh the most and so it goes on the rec page. There's girl!Sirius. That's all you need to know. Post-OOTP.
If You're Breathing by Sandy Justine. My favorite Harry/Neville story, about training with the D.A.