I love a good theme anthology, and my favorites include the Chicks in Chainmail and the Man-Kzin Wars series and the Catfantastic volumes, also War of the Worlds: Global Dispatches and Don't Forget Your Spacesuit, Dear.
I have stories in a few anthologies, btw: The Ghost in the Gazebo, Kings of the Night II, Womanscapes, and Magistria: The Realm of the Sorcerer. (Magistria: Shards of the Goddess is upcoming.) Magistria is a shared world anthology: Amazon.com: Magistria: The Realm of the Sorcerer: Robert J Santa, Lawrence Barker, G W Thomas: Books
I have a review of Man-Kzin Wars XII on the Christian Science Monitor website (Readers' Picks): Man-Kzin Wars XII csmonitor.com and interviews with two of the Man-Kzin Wars authors, Hal Colebatch and Matthew Joseph Harrington, in the May issue of Expressions: Expressions 107