Night Of The Living Dead was originally written as a horror comedy called Monster Flick which, at the time, was about alien invaders who befriend a group of teenagers, and could possibly be mistaken for Teenagers From Outer Space, so they returned to the writing board and added the living dead which Romero called ghouls, after the television executives he had as clients. Then he was inspired by I Am Legend by Richard Matheson, and came up with the more apocalyptic scenario we're watching tonight. I Am Legend, of course, was adapted as The Last Man On Earth, which was the first film I screened, thus the Cycle Of Life and the Public Domain revolves.