History BrotherSisterIncest / LiveActionFilms

* ''Film/TheCrow'': Top Dollar and Myca are [[BrotherSisterTeam half-siblings]] who are open about their sexual relationship [[VillainousIncest and their villainy]].

* In ''Film/TheSeeker'', there is a distinctly unsisterly vibe towards Will from the youngest sister.

** ''ComicBook/GodzillaAftershock'' outright ''confirms'' this, by showing that yes, indeed, the two MUTOs from the first movie were, in fact, in an incestuous relationship.

* ''Film/TheDangerousLiveOfAltarBoys'': Margie was molested by her older brother Donny, a fact that she reluctantly reveals to Francis, who then reveals this to Tim, setting in motion the events that drive the third act.

* In the Spanish drama short film ''[[Film/DeTierra De Tierra]]'' (2012), siblings Julio (Tenoch Huerta) and Belén (Eileen Yañez) develop an incestuous relationship after their mother's death, causing the brother to feel haunted with guilt. Eventually, the brother goes insane and he stab his sister to death.

* In the Spanish drama short film ''[[Film/DeTierra De Tierra]]'' (2012), siblings Julio (Tenoch Huerta) and Beléne (Eileen Yañez) develop an incestuous relationship after their mother's death, causing the brother to feel haunted with guilt. Eventually, the brother goes insane and he stab his sister to death.

* ''Film/SayItIsntSo'' uses this as a joke for almost the whole film. Jo (Heather Graham) and Gilbert (Chris Klein) fall in love. Jo's parents aren't too happy that she isn't dating a rich guy, so they come up with a plan to convince her and Gilbert that they're brother and sister, so that they can become rich. Gilbert realizes they're not related when Jo's REAL brother shows up, then HilarityEnsues when Gilbert repeatedly goes to great lengths to convince Jo that they aren't related. After they get married, a [[BrickJoke brick falls out of the sky]], in the shape of Susanne Sommers, who turns out is Gilbert's real mother. Gilbert is so happy, until Jo reminds him of what he told her earlier... [[spoiler:using posters of said celebrity as masturbation fodder]] in his teen years.

* In the 1982 ''Film/CatPeople'', Malcolm [=McDowell=] insists that his full sister Natassja Kinski have sex with him as the only way to continue their family. (They will turn into panthers if they mate with normal humans and must kill before they can be restored.) He says that their parents were full siblings as well.

* ''{{Film/Transformers}}'': According to Sam's [[http://tfwiki.net/w2/images2/c/c7/Witwickytree.jpg family tree]], the Witwicky family tree consists of two generations of inbreeding. This however might just be the fact that Sam did a terrible job researching.

* ''Film/IAmRoshni'' is "Bollywood's first incest movie." Thanks to parental abuse, brother and sister Raj and Roshni turn to each other as their only support, and then fall in love. Their consensual, caring relationship is contrasted with the ''other'' kind of incest, the CreepyUncle who molestes Roshni. By Western standards, the film is remarkably clean. However, then CBFC (India's CensorshipBureau) refused to approve it. Eventually the makers released it for free on [=YouTube=] and wrote off any commercial gains.

* In ''Film/LemonadeJoe'', there is one {{Triang Relation|s}} drawn throughout the movie. Doug Badman is hopelessly in love with Tornado Lou, a [[TheChanteuse Chanteuse]] and SoiledDove who works for him. She doesn't reciprocate his feelings, but falls hard for the IdealHero Joe whose love she thinks will make her a better woman. He's a CelibateHero and doesn't love her back. (Instead, he later falls in love with pure and innocent Winnifred Goodman.) At the end of this hilarious {{Troperiffic}} ClicheStorm of a movie, it's revealed that [[spoiler: both Doug and Lou are Joe's [[LongLostRelative Long Lost Siblings.]]]]

* ''{{Series/Bliss}}'': Harry's son, David insists that [[spoiler: Lucy, his sister, would perform sexual services for him in exchange for drugs]]. This episode doesn't lead to any dramatic consequences later on.
* ''{{Film/Blood}}'', a 2004 Canadian movie is all about the dirty talk between sister and her brother, just released from jail. The whole action (nothing explicit) in the movie takes place in a room. But the movie has incestuous overtones.

* ''{{Film/Borat}}'':

* ''{{Film/Climax}}'': Taylor is extremely protective of his sister Gazelle and gets uncomfortably close to his sister at points, especially during the opening interviews. [[spoiler: He makes good on his attraction to her once the LSD kicks in, seducing her despite her saying it's wrong. It's left ambiguous if Taylor did rape his sister: they're only seen after the time cut sharing the same bed, where even though Gazelle doesn't recall anything occurring, she is asked to not "tell Papa" by her brother.]]

* ''Film/LoneStar'': This Creator/JohnSayles' film has the main character and his love interest find out the reason why his much hated father kept them apart while they were teens; [[SurpriseIncest they're half-siblings]]. Since she is sterile, they decide to move somewhere where their biological connection won't be known and go on with the relationship.

* In ''Film/JoeDirt'', Joe realizes that a woman who is intensely attracted to him may be his long-lost sister, but because he's normally such a loser romantically, he doesn't tell her until ''after'' they have sex. Fortunately, it turns out her brother wasn't ''long''-lost, they found him again almost immediately, meaning she's not related to Joe. This means they can have sex again, but Joe can't get it up anymore - until they role play being brother and sister. In the present day setting of the movie, Joe then admits he made that last part up to gross out his listeners. Or did he?

* In ''Film/ThePeopleUnderTheStairs'', "Mommy and Daddy" (the villains) are eventually revealed to be incestuous brother and sister - and it's a family tradition going back who knows how many generations.

* ''Film/ShockTreatment'': Drs Cosmo and Dr Nation [=McKinley=] (Creator/RichardOBrian and Creator/PatriciaQuinn) have an explicitly BSI relationship until [[spoiler:it's discovered that they're not actually siblings, but character actors with a bad habit of letting their real relationship bleed into their roles]].