* AwardCategoryFraud: Despite Mattie being the protagonist of ''True Grit'', Hailee Steinfeld for the Coen Brothers adaptation was demoted by almost every single film awards association to "Best Supporting Actress" while her co-star Jeff Bridges was nominated for Best Actor.
* TheDanza: Barry Pepper plays Lucky Ned Pepper.
* DawsonCasting: In the book, Mattie is about fourteen -- and prepubescent.
** 1969 film: Kim Darby, who was well into her twenties.
** 2010 film: HaileeSteinfeld, who was 13 at the time.
* DisabledCharacterDisabledActor: In the 2010 film, a woman missing her left forearm (due to a birth defect) was hired to play older Mattie in shots that don't show her face. She winds up having more screen time than the actress that plays older Mattie, mostly due to the long shot at the end of Mattie [[spoiler:walking away from Rooster's grave]] that lasts into the credits.
* HeyItsThatGuy: After haggling over some horses with [[TheKingOfQueens Doug's dad]], Mattie witnesses the ignominious hanging of [[KingOfTheHill John Redcorn]], and then hires [[TheBigLebowski The Dude]].
** Hey, it's Domhnall Gleeson!
** Lucky Ned was [[SavingPrivateRyan the sniper Daniel Jackson]]!
* HeyItsThatVoice: The voiceover of the lawyer as Mattie reads the letter is an uncredited J.K Simmons AKA [[{{VideoGame/Portal2}} Cave Johnson]], [[Film/SpiderMan J. Jonah Jameson]], etc…
* PlayingAgainstType: John Wayne usually played straight heroes, not middle-aged drunken {{Anti Hero}}es.