Zero Gravity Adventures in Deep Space (Pill Hill Press, 2010) is a theme anthology, my favorite kind. There is a variety of stories about humans, aliens, computers, and clones in space, and some of them are nasty! (I saw the review in Tales of the Talisman and decided to get it. There are some good theme anthologies out there, btw, including Magistria: Realm of the Sorcerer, where you can read my short story, Seedlings.)
Magistria: The Realm of the Sorcerer is a shared world anthology of mages and magic; in Seedlings, plant mages fight alongside their sentient plant companions. You can buy it on amazon:
http://www.amazon.com/Magistria-Realm-Sorcerer-Robert-Santa/dp/0981932320/ref=sr_1_1?ie=UTF8&s=books&qid=1232426222&sr=1-1