Fact one: People have sex. Fact two: Because sex is a natural human experience, some movie directors opt to include it in their films—unsimulated—for a heightened sense of realism, which means you're looking at real actors having real intercourse. Here are 12 movies that broke taboos for just that.More
This 2008 film is about a zombie in Berlin, and features plenty of erotic scenes thanks to the fact that one of the characters is making a documentary about porn. Apparently, the intimate moments are real—so if your interests include zombies and sex, get on it.
1979's Caligula is slightly controversial in its status as a "regular" film vs. a porn film—but the fact that it has A-list actors like Peter O'Toole and Helen Mirren certainly lends it some mainstream cred. The movie was produced by Penthouse Magazine, and featured unsimulated sex scenes that were added post-production (much to the chagrin of the director) and acted out by "Penthouse Pets."