The Great Ephemeral Skin (2012)

A couple and two aspiring artists attempt to make the definitive cinema document of love and intimacy but end up just making a porn in the German real-sex extravaganza  Der große, vergängliche Haut (The Great Ephemeral Skin) (2012). Oskar (Oskar Klinkhammer) and Julia (Lana Sue) are a real-life couple who agree to be locked inside a posh Frankfurt apartment for ten days...and to let filmmakers Benjamin (Benjamin van Bebber) and Bastian (Bastian Zimmermann) to film them having sex while they're there. Benjamin and Bastian say they're trying to capture what they call "absolute intimacy," but can you film two people screwing without calling it porn? Mr. Skin says: as long as we get to see Lana taking her lover's bratwurst in scenes of full nudity and hardcore penetration, who cares?