Cyrano (straight up SB Rumbelle) and
There Was a Crooked Girl (a Zombie AU) are also good! There's also
How to Save a Life, which is another zombie AU (we had a phase!), not to mention
Talk to Me, with Radio Host!Gold and Caller!Belle,
Darkly Intriguing, which is the Addams family crossover one (both by the glorious Straggletag),
The Course of Our Fate with Hooker!Belle and Cop!Gold,
Heart Murmurs has Dr!Gold and Dr!Belle in a hospital,
One of the best of them all, though, is
Behind Closed Doors, which is a kind of West Wing!Rumbelle, by the same author as the mighty
Black Flagged. It's only a chapter or two in though, and on hiatus for a while like Black Flagged.
Er, I should probably point out that nearly all are explicit in some way though. We are a smutty, smutty fandom!
Ooh, and I forgot
Life Model!Belle, and
Spinner's Son!