Scooby-Doo (animation)/Nightmare Fuel


 * After watching Vampire Bats and Scaredy Cats (The Scooby-Doo Show), this troper, as a young child, had to sleep with a full head of garlic on her nightstand. For a month. Literally had nightmares about vampires coming to kill her.
 * The Scooby Doo Project. It's a parody of The Blair Witch Project. That should show give you a good idea.
 * Scooby-Doo on Zombie Island is horrific. It's full of Body Horror.