It often seems as though each modern horror movie can at least muster up one virtuoso sequence, something better than the sum of its parts. Alexandre Aja’s Mirrors is often staid and unremarkable, but there’s a moment in there where Amy Smart’s character performs an act of self-mutilation stunning in its gory, go-for-broke visual flair; we can even go back to 2002″²s three-alarm snoozer Ghost Ship, which opened with a stunningly gross prologue that belongs in the horror kills hall […]