Buried (2010)

Paul Conroy is an american truck driver working in Iraq where he is the victim of an attack, but discovers it when he wakes up buried inside a coffin. Underground, with only a lighter and a cell phone with a low battery, Paul must prevent despair from overpowering him as he hopes to be rescued. A psychological thriller has never been more claustrophobic than this one, directed by Rodrigo Cortés and featuring a riveting performance by Ryan Reynolds. A must-see film, unnerving and overwhelmingly tense.