Wes Craven: Two words that by their associative powers alone, can conjure inimitable phantasmagoric visions from which you cannot avert your eyes, but in the dead of sleepless night, so desperately wish you had. Whether it’s the snicker-snack of finger-knives or an Edvard Munchian bogeyman that threatens our dreams, it’s high-time that we got ourselves educated on the hand that wields them…