DVD: Buried (15)

"You're not an asshole, Mark, you're just trying really hard to be one." Aaron Sorkin's whip-sharp dialogue pings like a Rafael Nadal forehand in David Fincher's compelling and droll look at the rise of Facebook and the demise of the founders' friendships.

The audacious first minute of Buried feels like the cinematic equivalent of John Cage's 4'33". We're presented with silence, darkness. The next 94 minutes involves a lot of pants, moans, grunts, gasps and screams. Ryan Reynolds's truck driver, Paul, has been buried in a box somewhere in Iraq. His only "companion" is a mobile phone, helpfully left by the unseen kidnappers who placed him in this grim predicament. Reynolds, previously notable for romcoms like The Proposal, is impressive here and there's a welcome streak of black humour. However, you can tuck into this gimmicky, queasy horror once, but you wouldn't come back for seconds.