Pornographic films (pornos), erotic films, or sex films are films that present sexually explicit subject matter in order to arouse and satisfy the viewer. Pornographic films present sexual fantasies and usually include erotically stimulating material such as nudity (softcore) and sexual intercourse (hardcore). A distinction is sometimes made between "erotic" and "pornographic" films on the basis that the latter category contains more explicit sexuality, and focuses more on arousal than storytelling, but the distinction is highly subjective. Films with risqué content have been produced since the invention of motion picture in the 1880s. Only in the 1970s, during the Golden Age of Porn, were pornographic films semi-legitimized; and by the 1980s, pornography on home video achieved wider distribution. The rise of the Internet in the late 1990's and early 2000's similarly changed the way pornographic films were distributed, fast forwarding to today, access to high quality pornography has never been easier for today's adults. Source: Wikipedia