From
3ships:
"Till Break of Day" NC-17, Harry Potter, Remus/Sirius/Tonks. This is a pairing that should be obvious. It just makes sense, and this first time piece is quite hot.
"Unintentional" Firefly, NC-17, Jayne/Kaylee/River. Well-written, a great Jayne-voice.
"Crossing Lines" House, NC-17 House/Wilson/Cuddy --There's no good reason this should be so hot, but it is.
From elsewhere:
"Three's the Charm (Extended Reynolds Remix)" by
kassrachel NC-17, Firefly, Mal/Wash/Zoe. --Ok, this is the third Mal/Wash/Zoe piece I've read today, and the only one I've recced so far, so that should tell you something. The language is great, the set-up believable, and the sex is damn hot.
"What Fools These Mortals Be" by
isiscolo. Harry Potter, NC-17, Snape/James Potter/Lily Evans. But with bodyswitching!! It's crackfic, but really, really hot. Snape ends up in Lily's body and decides to take advantage...
"Vicarious Experience" by
violet_quill. NC-17, Remus/Snape/Tonks/Snape. Actually a foursome, and just about the hottest thing I've ever read. I can't believe I didn't rec this ages ago. It's an older fic, but in the spirit of the day, I had to look it up.