Zombies! They're the most terrifying undead creatures around (and definitely the grossest), because they won't talk to you, they barely resemble their human selves, and you sure can't reason with them. All they want to do is catch you and eat your braaaaaains.
Prep for Halloween with our gif wall (via Rich Juzwiak) of zombies doing what they do best: coming to get you. They may be dead, but dude, those suckers can move.