The Exorcist. The Omen. Halloween. Dawn of the Dead. Jaws. Carrie. The Texas Chain Saw Massacre. The Amityville Horror. Phantasm. Invasion of the Body Snatchers. Alien... The '70s were an absolute golden age for horror at the movies, a collective time of cinematic greatness reflected by so many iconic films defining how we look at the genre for decades to come.