You know what's even scarier than running zombies? Thinking zombies!
George Romero kicks his zombies up a notch by having them learn to think and communicate with one another. Led by "Big Daddy" - an especially angry looking gas station attendant zombie - the living dead stop staring at fireworks and mount an attack on a human fortress previously believed to be protected on three sides by water. Ha - water is no protection against zombies - they don't need oxygen!