Cell 211 (Celda 211)

A young prison guard gets caught up and left behind in a riot and does the only logical thing, given the circumstances: He disguises himself as one of the prisoners. This hugely popular movie snagged eight Goya Awards (which are like the Spanish Oscars) last year. No surprise that Hollywood is now working on a remake, which it will probably ruin. So go see the original. At the very least you'll have bragging rights.