By far the best Potter poster so far! I suppose the best thing about it is its simplicity, which, far from being contrived, seems to tell a story instead of just trying to give the viewer a bunch of eye-candy. What I like best about it is how they managed to make the actors look so apprehensive and frightened, as opposed to the posters for the first two movies, which gave them determined or even happy looks.
Awesome on so many levels! I love how it states that it's going to be a different kind of movie than the other ones, with the colouring and wintry feel. I like the play on MacBeth as well. And just the looks on all their faces is enough to convey the feeling they're aiming for. By far the best Potter poster.