Nazi zombies? Who doesn't want a piece of that, especially as they feed on oversexed medical students Easter vacationing in the Norwegian Alps? If you tamp down your expectations — those gaping plot holes are dangerous! — there is a storm of scary fun to be had in this Scandinavian splatterfest. Conveniently, the vacationers include a movie junkie (Jeppe Beck Laursen) who points out the flaws in other horror flicks. It's fun counting the allusions to zombie lore. Props to director Tommy Wirkola. He makes the blood look crazy creepy in the snow.