Under My Hat: Tales from the Cauldron edited by Jonathan Strahan

I really enjoyed this collection of short stories about witches. It's worth noting that Neil Gaiman's contribution is a short poem rather than a story. I picked up the collection for the Bigfoot story by Jim Butcher (which didn't disappoint)--but I enjoyed most of the stories in the anthology (usually there's a dud or two). I particularly enjoyed both Jane Yolen's "Andersen's Witch" and Ellen Kushner's "Threefold World" which posit witchcraft as part of the reason for the creations of Hans Christian Andersen's fairy tales and the Finnish epic, The Kalevala, respectively.