Old Ghosts by Chrislee Octaves
Post NFA, B/A/S- What they want. What they get. R.

No Place Like Home by Chrislee Octaves
B/A/S, post-series. Comfort in unlikely places. NC-17.

Breath and Memory by Chrislee Octaves
B/A/S future-fic. Mostly smut. NC-17.

Long, Strange Journey by ChrisleeOctaves
B/A/S, where the chick's in charge. As it should be. NC-17.

Nothing Less by Criss Moody
Loosely Angel/Buffy/Spike, but not sexually really. There's little explicit slash here. 
PG-13, maybe light R.

What Remains by Criss Moody
A/W/S...the claiming. NC-17.

Between Times by Criss Moody
Dirty dirty dirty sequel to What Remains. A/W/S. NC-17.

With A Twist by Criss Moody
Angel/Oz/Doyle. Drunk and horny. Followed immediately by tied to a bed and sticky. Bring ice. NC-17.

Prelude by Doyle
Aus/Wm & Dru. Dysfunctional smut. NC-17.

Stranger Things  by Esmeralda ((OUTSIDE LINK TO ONGOING SERIES))
Outside link to an AU series containing slash in various combinations of A/S/X/Doyle. NC-17.

Together Again For The First Time by Femmenerd
Spike POV threesome. Smokin' smut, killer characterization. A/S/B. NC-17.

What I See by Femmenerd
Three Utopian drabbles. B/A/S. PG-13.

Waiting for the Apocolypse by Femmenerd
'Cause that's what they do. In between the sex. B/A (Spike), future-fic. R.

Seduction 101 by Flurblewig
Angel is denser than gravity. Spike helps Nina buy him a clue. Angel/Spike/Nina. NC-17.

Marriage of Heaven And Hell by Jenny O'
Angel has a knack for making the same family again and again. A/Wes/Lilah. NC-17.

Three Is Company, Four is Just Tiring by Kat Knight 
Angel/The Furies. Graphic heterosexual threesome. NC-17.

In the Company of Men by Kismet
A/L detailed and A/S implied. Cordy keeps a secret. NC-17.

Last Men Standing by Kita And M
Future fic. 20 years from now, and none of it's pretty. A/S, A/X, S/X. Others implied. NC-17.

Fanged Four Fairytales by Kita
Angelus/Spike & The Fanged Four in various and multiple combinations. NC-17.

Vicarious by Lynne
Vampire (what passes for) comfort, post 'The Girl in Question'. Physically A/S; strong B/A & B/S overtones. NC-17.

Sense Memory by Lynne
Angst and grief and longing, together with gorgeous prose and smokin' smut. A/Buffy/Riley. R.

Angels & Insects by Lynne
Angel will do anything to protect Connor. The consequences of which become much more than he bargained for. Spike/Connor, Angel/Spike, Angel/Connor, Angel/Spike/Connor. 
Takes place post-NFA. Story contains graphic, consensual incest. NC-17.

Kisses Like Nothing Else by Lynne
B/A/S. 300 words of future-fic. PG-13. 

The Buffy in the Mix Re-mix by Lynne
B/A/S with pegging. Holy MARY this is hot. NC-17.

Divination Using Stones by Mer
What if? S2 AtS, A/S/(Drusilla). R.

Empty Rooms, Shuttered and Dark by No Melon
Angel/Spike/Riley. The man has urges, the vampires have souls, but no qualms. Hard R.

All That's Best of Dark & Bright by RedbrickRose
Post NFA, B/A/S, angst & sex. R.

Of Infinite Space by RedbrickRose
B/A/S/Faith, post-series. Destiny and poetry. R.

Don't Tell Me by Romany
A/S, B/A/S, S5, post 'The Girl In Question.' NC-17.

Darkness Inside & Phone Calls by Sofia
Short B/A/S AU future stories. Lovely and bittersweet. R.

Tea & Buscuits by WesleysGrl & Byrne ((OUTSIDE LINK TO LENGTHY SERIES))
Contains A/S, A/W & various combinations of Angel,Spike,Giles & Wesley. NC-17.