How To: Create the gruesome demon possessed makeup look from "The Exorcist"

"The Exorcist" is hands-down the scariest movie we've ever seen. Of course, watching it alone one evening by ourselves when we were six probably didn't help. But this old horror flick was classic, spine-tingling terror: No hokey special effects that we have today, no CG, just plain horror.

And the possessed chick? Holy crap we wouldn't want to mess with that girl. If you're a horror fiend who's looking to do some serious scaring this Halloween, check out this video to learn how to recreate the famous Exorcist girl look. Is this the scariest makeup you've seen or what?