When it comes to scare tactics, advertisers are fond of one rotting, shuffling, foul-smelling, flesh-eating monster in particular: the zombie. In this, they're simply mimicking consumers, who've had an insatiable appetite for zombies for years now. And it's often true that nothing brings an ad campaign to life quite like the undead. It hardly matters what you're selling. Cars, electronics, video games, sneakers, candy—whatever the category, the ads are always happy to welcome an animated corpse or two, hell bent on dispossessing you of your brains and your disposable income.