''(For other uses of the term "Bug", [[Main/{{Bug}} see the disambiguation page]])''

''Bug'' is a 2006 PsychologicalHorror film based on a play by Tracy Letts, directed by Creator/WilliamFriedkin and starring Creator/AshleyJudd and Creator/MichaelShannon.

It centers around Agnes, an extremely lonely woman living in an Oklahoma motel room after the breakup of her marriage. A friend introduces her to Peter, who is similarly lonely, and the two start [[LonelyTogether enjoying each other's company]]. The two open up to each other and then...[[FromBadToWorse well...]]

An intriguing example of folie à deux. ''Maybe.'' Not to be confused with the 1975 Creator/WilliamCastle-produced film about mutant cockroaches.

!!The movie contains examples of:

* CorruptTheCutie: What Peter does to Agnes. Agnes goes from a lonely, vulnerable woman to a tinfoil plastering suicidal conspiracy theorist.
* DarkAndTroubledPast: Agnes is divorced from a real {{Jerkass}} - who's in prison at the start of the movie and shows up to threaten her - and her son was stolen from a supermarket cart while she was shopping. Her overwhelming guilt and sadness leave her receptive to Peter's peculiar charisma.
* DownerEnding: [[spoiler: Agnes and Peter kill themselves by setting themselves ''[[KillItWithFire on fire]]''.]]
* GenreBusting: The film would normally be considered a psychological drama or thriller while the studio promoted it as straight-up horror and the director considers it a dark romantic comedy. Maybe it's left up to the viewer.
* {{Jerkass}}: Jerry.
* InsaneEqualsViolent: Peter is this, to himself and others.
* LonersAreFreaks
* LoveMakesYouCrazy: Or extreme loneliness, for that matter.
* MindControlConspiracy: According to Peter, this is why he is on the run.
* NeverTrustATrailer: It's nothing like the ''Franchise/{{Saw}}'' movies. It's more psychological than that.
* PsychoSupporter: Agnes. Peter isn't her first one, either.
* RiddleForTheAges: Are the phone calls real? If they are, who's calling? [[spoiler: One theory is it's Agnes' estranged son.]]
* SanitySlippage
* ShellShockedVeteran: Peter claims to be this. It may even be true.
* TheToothHurts: Peter uses a pair of pliers to rip out his molar's filling which he believes is where the "egg sac" is. Boy, it sure isn't pretty to see tons of blood pouring out of his mouth like that while screaming in great pain. Regardless, Peter and Agnes both end up seeing the "bugs" in the tooth under the microscope.
* ThroughTheEyesOfMadness: Everything in the film might be really happening. Or the characters could be heavy crystal meth users and we're seeing their delusions. Or Peter may be clinically insane and dragging Agnes into hell. You'll never know. [[spoiler:Unless you listen to the director's DVD commentary.]]