Orson Scott Card's Ender's Game is one of my favorite SF books. I know I'm not the only one, and for years there have been rumors of a film version. I haven't followed this too closely, but apparently it's finally happening (release date November 1, 2013). So far there is only a brief teaser trailer, introduced by stars Harrison Ford and Asa Butterfield (who plays Ender Wiggin). The full trailer is due May 7. The zero-G "Battle Room" plays a central role in the book, and the teaser shows a couple of brief shots of this, captured below. It looks really cool. I hope the movie is good. I just ordered the Kindle version so I can re-read it again (too lazy to go find the paperback!).
UPDATE (5/16/13): Ah yes, Ender Wiggin, not Wiggins. I saw the full trailer and didn't like it as much as I hoped. I suppose there are practical reasons for making Ender and the other Battle School kids older than they are in the book (Ender is six when he starts International Fleet Battle School, which he attends for only about three years before advancing to other things). And in his brief trailer scenes, Asa Butterfield doesn't quite look and act as I imagined Ender would look and act after re-reading the book last week. But there's a lot of potential there and I will keep an open mind and just wait for the film.