There's a lot of these shaky-cam movies around at the moment, and among your "Cloverfield"s and "Diary Of The Dead"s this low budget Spanish movie may seem like the underdog, but it's punching way above its weight.
Filmed by a TV crew stumbling upon something very nasty happening in an apartment block, the movie is shot and acted brilliantly, the sense of unease gradually giving way to all out terror. While it's obviously derivative of movies like "The Last Broadcast" and "The Blair Witch Project" it manages to deliver in a way that those movies couldn't thanks to some brilliant set-pieces. It's not even out in the UK yet and Hollywood have already remade it (the inevitably inferior "Quarantine") but do yourself a favor and spend an evening in the dark with the original. You'll regret it, but in the best possible way. Terrific.