I've picked up a few new Philosopher's Stone's this month. This is the Bloomsbury 21st anniversary edition--part of a set of 21 great books they're re-releasing. It includes an introduction by Alexander McCall Smith and a few pages from J.K. Rowling listing some of her favorite books. I think it's one of my new favorites.
I also got the Ancient Greek edition, which looks just like the British edition, except that (obviously) it's in Greek.