Body Count: 11 (if you include the snake)
In the late 1970's an exploitation filmmaker named Sean S. Cunningham placed a full page ad in the papers to drum up interest in a movie. He had no backing, no script, just a name: Friday the 13th ..."The most terrifying film ever made!" The name sounded cool and nobody sued him over it, and that was all the green-lighting he needed. He took the most memorable parts of Halloween and Psycho, sprinkled in some Kevin Bacon, and a franchise was born.