9. Keep goats out of the room.
Learned from: Drag Me to Hell (2009)
Complex says: Animal sacrifice is common enough, but human-to-animal transference? That’s a whole other degree of complication best left to beastiality fetishists. In Sam Raimi’s playful horror flick Drag Me to Hell, a seance is arranged for Alison Lohman, who’s been cursed with the spirit of a demon known as the Lamia. What transpires is a manic bit of slapstick exorcism involving a trash-talking goat that's inhabited by the malevolent force and bites one of the human participants, which then passes the evil his way. Where’s the ASPCA when you need them?