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''The Roommate'' is a 2011 horror-thriller released by Screen Gems.

College freshman Sara is randomly assigned to a dorm with a stranger named Rebecca. They start off as friends, but things turn deadly as Rebecca begins to obsess over Sara.

Despite its similarities, it is not a remake of or a sequel to ''SingleWhiteFemale'' as many people believe.

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!!The film provides the following tropes:

* ActionGirl: [[spoiler:Sara in the climax.]]
** DarkActionGirl: Rebecca is no slouch herself.
* ActionSurvivor: [[spoiler: Sara, Stephen, and Irene.]] Tracy counts too, seeing [[spoiler: she moves out of the dorms after being attacked before anything of the murders happens]].
* AxCrazy: Guess who?
* BrainsAndBondage: Well, either fashion designer Irene just happened to have a ballgag lying around or talented artist Rebecca went and got one.
* {{Fanservice}}: Tracy's shower scene, with the gratuitous shots of her stomach.
** FanDisservice: [[spoiler: Rebecca attacks her and rips out her belly piercing.]]
* DawsonCasting: Minka Kelly was born in 1980 and Leighton Meester in 1986.
** Although if Rebecca was held out of college due to mental issues, she could be older than the age of the average freshman
* DoesNotLikeShoes: Rebecca is barefoot at all times in dorms.
* GoodBadGirl: Tracy is really nice, she's just kind of flighty. Rebecca disapproves of this, very much.
* HeyItsThatGuy: [[Series/FridayNightLights Lyla Garrity]] and [[GossipGirl Blair Waldorf]] are roommates. [[{{Hellcats}} Marti Perkins]] and [[Film/NeverBackDown Ryan McCarthy]] also go to school with them.
** And [[Series/DegrassiTheNextGeneration Mia Jones]] was Rebecca's last victim.
** Jason Tanner is [[StarWarsTheCloneWars Anakin Skywalker]].
* HorribleJudgeOfCharacter: Sara. It doesn't make her a bad person, but her roommate is a psycho, her best friend drunkenly ditches her at a frat party, her (married) fashion design teacher (who she ''insisted'' on having) wanted her sexually, and her boyfriend spills beer on her and tries to take her up to his room five seconds after meeting her.
* HotForStudent: Professor Roberts lost his job over it.
* IJustWantToBeYou: Rebecca's intention toward Sara.
* IronicEcho: "You were never my friend."
* KickTheDog: [[spoiler: Poor, poor Cuddles.]]
* LipstickLesbian: Irene.
* MeanCharacterNiceActor: Leighton Meester [[http://www.contactmusic.com/news.nsf/story/meester-held-back-during-roommate-fight-scenes_1198459 admits]] that she held back during the scenes where she fought Minka Kelly, out of fear of injuring her since the two have been friends for years. She apologized to her after every take.
* StalkerWithACrush: Rebecca.
* StraightEdgeEvil: Rebecca is a Puritanical devout Christian with a horror of moral decadence.
* TheReveal: When Rebecca takes Sara to her parents' house for Thanksgiving, her mother asks [[spoiler:if Rebecca has been taking her medication]]. As Rebecca enters the room, her mother then says something along the lines of "Well, I hope you girls have fun!" Later, Sara searches through Rebecca's stuff until [[spoiler: she finds the medication in question, noticing that the bottle is full. Sara looks up the medicine's name online, and finds out that Rebecca is (supposed to be) taking medicine for bipolar/schizophrenic behavior]].
* VillainousBreakdown: [[spoiler:Rebecca has one in the climax.]]
* {{Yandere}}: Rebecca.
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