I've read:
ENDER'S GAME
SPEAKER FOR THE DEAD
XENOCIDE
ENDER'S SHADOW
SHADOW OF THE HEGEMON
SHADOW PUPPETS

I was a huge Card fan, loved his books, especially the Alvin Maker series. BUT, although I loved GAME and SPEAKER, I absolutely detested all the following Ender/Bean books I've read, and have actually quit reading Card's books. His whole style (or something) seemed to change after XENOCIDE, and with the exception of only a few of his novels after that, I just could not get into his stuff any more. Which makes me sad, because I still think he's a great writer.