Sergeant Jeffrey Sarver sued the producers of the film because he was convinced Will was based on him. The suit was dismissed. (Source)

We've mentioned this already, but The Hurt Locker is the lowest-grossing movie ever to win best picture. Guess money doesn't always determine worth. Who'da thunk? (Source)

The ratio of footage shot to footage used in the film (by hour) was 100:1. Which is a lot. Like, a lot a lot. (Source)