2011 {{dramedy}} about a man named Ronny (Vince Vaughn) who sees the wife (Creator/WinonaRyder) of his best friend Nick (Kevin James) cheating with another man. Ronny then goes through great pains to collect proof, while hiding the information until the right time. Directed by Creator/RonHoward.

!!Tropes associated with this movie:

* {{Blackmail}}: Geneva does this to Ronny.
* CelebrityParadox: The characters reference Creator/KurtRussell's speech in ''Film/{{Miracle}}''. ''The Dilemma'' was directed by Creator/RonHoward, who also directed Kurt Russell in ''Film/{{Backdraft}}''.
* TheCoconutEffect: In-universe, Ronny's and Nick's job is to work Coconut Effects into products. During the movie, they're making silent electric cars "roar" as if they had loud combustion engines.
* FelonyMisdemeanor: One "big secret" that Ronny has kept from Nick for years is that he dated Geneva... during college... before Nick and Geneva ever even met. In the crucial scene, the anger is directed toward Ronny, not Geneva, whom Nick is ''married'' to.
* MoodWhiplash
* NeverTrustATrailer: This film was advertised as a laugh-out-loud comedy. It does have some hilarious moments, but for the most part, the film is quite dark.
* RelativeError: Ronny mistakes a man talking to his girlfriend as trying to feel her up but when he confronts them Ronny's girlfriend says that the man is her cousin. And gay.
* SirNotAppearingInThisTrailer: Another case of 'Sir Not Appearing On This Poster'. One would not even know that it is an ensemble film with Creator/JenniferConnelly, Creator/WinonaRyder, Music/QueenLatifah and Channing Tatum in the cast (instead, the poster just shows Vince Vaughn and Kevin James grinning).
* TookALevelInBadass: Ronny creates a flamethrower using a candle and cleaning solution to scare off the man Geneva's seeing.
* UglyGuyHotWife: Vince Vaughn and Kevin James are average-looking at best, and both are quite overweight (the latter more so) -- but snagged women who look like Jennifer Connelly and Winona Ryder.
** RealityIsUnrealistic. Look at who Kevin James is married to.
* YourCheatingHeart: Basically the whole premise of the movie.