An XXX Rated Celebration of Adult Movies. According to film historians, the first motion picture was screened in December 1895. And the first dirty motion picture was screened just a few months later. Adult movies are nearly as old as cinema itself. The Big Book of Porn celebrates this controversial art form in all its timeless glory - from the stag films of the 1920s and the Super 8 reels of the '50s to the VHS boom of the '80s and the interactive DVDs of tomorrow.