Nymphomaniac (2014)

Considering this is a Lars Von Trier movie, it probably comes as no surprise that the director likes to employ real sex scenes in his movies. In fact, to get the role, Shia LeBeouf apparently sent Von Trier pictures of his member and videos of himself having sex with his girlfriend.

There are two sides to the saucy story though. Main actress Stacy Martin says, that while the sex scenes were definitely real — it wasn’t her doing them, but adult film actors, while the actors’ faces were added in CGI. LeBeouf maintains that all of the scenes were real.