Better buy an oxygen tank, because your breath is about to be taken away. QUARANTINE stands on the admittedly tall shoulders of Cloverfield, but it also fulfills the promise of Blair Witch and with this one picture thrusts John Erick Dowdle into the top rank of horror directors. Prediction: his still-unreleased Poughkeepsie Tapes will hit the same raw nerve as Funny Games. Just spectacular. — Jeff Schultz