There are some really good ones and some mediocre ones. That said, I think "Silent Night" by Bob Brinkman is a great one-shot in modern day Arkham and perfect for running during Xmas (which I have done for the last two years). For a dreamier scenario Oscar Rios' "Xmas in Kingsport" revisits the characters playing children (his first being from Halloween Horror 2005). I'd give an honorable mention to "Gaudy" as well.
OVERALL GRADE: B to B plus.