I'll start the fanfic ball rolling with five Dollhouse crossovers that I love. Most are sexy or funny or both.
Shadows by
stop_theworld Dollhouse/His Dark Materials,(Adelle/Lord Asriel) rated NC-17 .
Lord Asriel and Adelle meet.
Minor spoilers for season 1 and The Golden Compass.
This Is The Sun Going Down by
ladyofspring Dollhouse/Angel, (Spike/Dru!Echo) rated R.
A Spike/Dru reunion, of sorts, in a slightly different post Chosen and NFA world.
Mild spoilers for season 1.
The Most Important Kiss He’d Ever Know By
prlrocks (Topher/Spike)
Dollhouse/Buffy, (Topher/Spike) rated PG-13.
A mild AU where Topher leaves the Dollhouse and runs into Spike.
No spoilers.
Sarah Sanderson Does Halloween by
demonqueen666 (Topher/Sarah/Dominic)
Dollhouse/Hocus Pocus, (Topher/Sarah/Dominic) rated R.
Sarah Saunder wanders into the Dollhouse.
Mild season 1 spoilers.
Two FBI Agents Walk into a Bar... by Fides
Dollhouse/X Files/Fringe, (Paul/Melle, Mulder/Kryckek, Olivia/John Scott), rated PG-13.
Ballard and Mulder have a lot in common.
Spoilers for Dollhouse season 1, X Files season 5 and Fringe season 2.
And a bonus drabble:
Unasumming by
snickfic Dollhouse/Buffy, (Dawn/Topher UST), rated G.
Faith and Dawn investigate the Dollhouse.
Post Chosen and mild season 1 spoilers.