Angel/Buffy (but not with each other)
Angel :
The Series
Solution (NC17)(Angel/Highlander crossover; Angel/Lindsey, Methos/Giles) 
Lindsey finds out there’s more than one kind of Immortal. Giles finds out there’s more than one kind of
Watcher. Methos is out-manipulated by
Joe (and likes it) and Angel is confused (as usual). Spoilers for all HL, BtVS and AtS eps
inclusive. For those who asked. (note: this rewritten and expanded version
includes the previously posted first two chapters, plus the rest of the story)
Even You (R) (Gunn/Wes) Gunn makes a choice. Spoilers for
"That Old Gang of Mine."
Washed Clean (R) What life without a reset button might be like
for Angel et al. Caveat lector.
Angel/Lindsey
Fine
Print (PG13, Lindsey/Angel) AU.
Angel should have read the fine print.
Lindsey should have written a different caveat.
Me in You (NC17) (Angel/Lindsey) It's a mad season in LA as
Lindsey comes home.
Watching Over (with elements of the movie Love Song)
(NC17) (Angel/Lindsey) Lindsey's past comes back to bite him.
Evil (NC17) (Lindsey/Angel) Lindsey and his new hand try
to start a new life. Fate intrudes. Massive spoilers for Dead End.
Epiphenomenon (NC17) Lindsey makes a choice.
("Epiphanies")
Best Laid Plans (NC17) Lindsey makes plans. Angel is confused. The
Powers that Be lend a hand.
Want versus Need (NC17) (Lindsey/Darla, Lindsey/Angel) During and
after the events of the episode Darla.
Innate
Darkness (NC17) Lindsey discovers, the hard way, how much he and Angel have in
common.
The One with
the Power (Powerless) (NC17) Angel learns the unexpected consequences of not cleaning one's
weapon before maiming one's opponent. Lindsey adapts.
Heart's Desire (NC17) Lindsey gets an unexpected reward from a
grateful client.
His Place in the
World (NC17) During the
episode "Blind Date" Lindsey consorts with the enemy.
A Slight Change of
Plan (NC17) Another
version of "To Shansu In LA" with your choice of endings -- Plan A, Plan B, or none at all.
Sex, blood, death and betrayal abound in Angel's city.
The Thorny Path
(the Righteous shall walk) (NC17) (Angel/Lindsey, Kate /Wesley) Wolfram and Hart raise the stakes.
Angel and Lindsey take the bet. The whole gang gets into the act. Refers to Forfeit, His Place in the
World, A Slight Change of Plan, and Plan A (the first of the two alternate endings to that story) but can stand
alone.
Angel/Doyle
Matched Pair (NC17) Doyle didn't die. Here's how, and why.
Irish Eyes (NC17) Following Matched Pair, Cordy gets an eyeful, Doyle is invited to an auction, Wesley shows his
true colors and Angel gets territorial.
Buffy
the Vampire Slayer
Forfeit (NC17) Giles makes a deal with Angelus to save
Buffy's life, and pays a harsh price.