It can feel tacky to admit that you appreciate a good movie sex scene. However, sex scenes aren’t just for shock and titillation. They can also be a vehicle to tell a story, or convey a message about our society or the human condition. Lars von Trier is currently using an insane amount of sex in his film series Nymphomaniac to deliver thoughts about what it means to "feel." His is just one of many films that broke ground and changed history.