Good Omens

The Probability of Ducks by graycastle
Just ducky. Sorry. Seriously, wonderfully ineffable and in character banter between Crowley and Aziraphale on the possibility of ducks.

Comfort and Joy by Penknife
Crowley and Aziraphale do Christmas shopping. Charming and wonderful and... ineffable. Just excellent.

Eight Nights by daegaer
This is just absolutely darling. Aziraphale is sneaky and clever, Crowley gets presents, and their affection for each other shines through nicely.

A Precise and Accurate History of Monday, Eleven Years Later by giddygeek
Oh, I'm in love with this story. It makes me all achy in the chestal area because it's so warm and loving and sweet and funny. Just completely charming.

It Came Upon a Midnight Clear by Daegaer
Aziraphale leads the heavenly host in reporting the news of Jesus' birth, but the shepherds are having a hard time keeping their wits.  Meanwhile, Crowley's got a bit of annunciating to do himself, though he'll get in trouble if Hell discovers what he's done. Funny, evocative of the book, could easily slide into canon. I loved it.

Going Home by daegaer
Aziraphale is called home. How will Crowley deal? Well, by trying to break his friend out of Heaven, of course. Just wonderful.

Genesis 3:25-27 by CobraGirl
Good Omens fic!  Adam and Eve are expelled from Paradise, in true Pratchett-Gaimanesque style.  Gorgeous.

Ordinary People (the Anything but Ordinary Remix) by cimorene
This is a long, sweet but not cloying Good Omens fic about how Crowley comes to fall for Aziraphale. You know how some fic is like sinking into a warm bath? That's what this fic is like. A warm bath, a mug of hot cocoa, and a really great story to make any bad day better.