These aren't necessarily movies about incest, but movies where incest has come up in one of the relationships depicted in the movie. Currently the practice of incest is banned in almost all civilized countries, with punishments in some being worse than others. Though some cultures encourage the practice among cousins, the societal norm is blood relation means no invitation... for the making of the sex, that is (I apologize ahead of time).
Now, while these aren't incest movies (or incest films), they do happen to have overtly incestuous themes. Sometimes the incest is played out like a joke, but most of the time it is in an uncomfortable way. Whether it was for revenge, love, or just because they were ignorant of their connections, the incest in these movies is usually hotter than it should be.FYI this site also has a list of books about incest.
If you've ever visited one of those celebrity Mr. Skin type sites, this is that one movie that seems to be almost exclusively about two dudes having sex with a really really hot girl. Kind of like Weird Science, only they didn't have to literally build her.
Set in 1960's Paris, the movie is about an American who gets close to two people he at first thinks are a couple and then is told they are actually twin siblings.
Over time, the relationship between all three blurs into a weird sort of communal love, but the incestuous boundary is definitely crossed. Eva Green stars in a pre-bond girl role where she makes love on numerous occasions to a guy while her brother watches, pleasures himself, and then even "has relations" with the other guy himself.
What happens when their parents finally come home and see what has become of their kids?
The parents immediately grab their things and abandon them, which goes to show why they probably turned out the way they did. Eva Green's character then has a moment of clarity and tries to kill the three lovers for what they have become. Here's a NOT SAFE FOR WORK link to the first love scene in the film, just to give you an idea of how disturbing it is Dreamers "love" scene. Seriously, it's NSFW, but hey, it's a European "art film," so it's okay.
This is even steamer than that scene.
#95 on The Best Hipster Moviessee more on The Dreamers
Before playing a math genius on "Lost," Jeremy Davies starred in David O. Russel's Sundance break-out film Spanking the Monkey as Raymond. When forced to care for his mother after an accident, Raymond loses both his internship and his girlfriend. With no other emotional outlet, he starts getting closer to his mother.
What ends up happening, well, you know what list you're reading. Yes, they do it. The trailer for the film is to the left and teaches you that (well, re-affirms, I really, really hope that you already knew this) you should never consider your own mom a MILF.
Also Rankedsee more on Spanking the Monkey
Michelle Trachtenberg is insanely hot. After years and years mired in little sister and teen roles, she finally got to show off her sex appeal in Eurotrip as the also insanely hot character "Jenny."
As four friends made their way across Europe, she and her brother had a number of misadventures, possibly the worst of them, though, is featured in the scene to the left where twins Jenny and Jamie end up getting so drunk on Absinthe they have no idea who they're making out with.
The incestuous liaison happens at the 3:30 mark and is... uh... yeah...
#20 on The Best Party Movies
#35 on The Best College Movies Ever
#27 on The Best Movies for Partiessee more on EuroTrip
The Blue Lagoon is a firestorm of controversy, from underage nudity (there isn't any, it's a body double) to the incestuous relationship that develops between the two (related) castaways, the film manages to upset every moral group's sensibilities.
While it isn't fully clarified in the film, the two main characters are either cousins (which is kiiiind of okay for the time period it takes place in, but still, it's rather grody) or brother and sister (not cool).
Either way, the two are definitely related, and the baby that they have together in the film is at a high risk for genetic defect, which once again, makes this come to mind.
#37 on The Best Movies of 1980
#59 on The Best Survival Moviessee more on The Blue Lagoon