Classics on Adult Film stand the test of time because they broke new ground. See the list of the Top 25 Must Have Classic Movies because they feature porn stars who were great in their own right, or because they were just so hot that you have to watch them over and over! Some of the Adult Movies are instantly considered Classics, and some are only now being recognized. But, they're all part of Classic Porn! For the Best in this genre, see the Adult Movies Category - Classics Best Sellers listed below.