History OohMeAccentsSlipping / LiveActionFilms

* Creator/RussellCrowe keeps slipping back into his natural accent in ''Film/TheNiceGuys''. Of course, it's not explicitly stated that he's supposed to be American.

* ''Film/DoctorInLove'': Dr. Burke pretends to be a Scotsman named Dr. [=MacGregor=] when assisting in Sir Lancelot's surgery, but his Scottish accent slips due to stress as he prepares to inject Sir Lancelot with anesthetic.

* ''Film/TragedyGirls'': Nicky Whelan mostly puts on an impeccable American accent playing Mrs. Kent. Saying certain words though causes her native Australian accent to bleed through.

** In ''Film/BackToTheFuture'', when Doc asks Marty [[WhatDoesSheSeeInHim how Lorraine and George ever got together]], Marty says "I guess she felt sorry for him...", pronouncing "sorry" as "sorey".

* Averted and lampshaded in ''Film/TheGreatMuppetCaper''.
--> Beauregard: It takes a while to get to know the town!\\
Kermit: How long have you lived in London?\\
B: Aaaall my life!\\
Fozzie: How come you don't have an English accent?\\
B: Hey, I'm lucky to have a driver's license!

* Only one of the March sisters in ''Film/LittleWomen2019'' is played by a woman actually born in the US (Creator/SaoirseRonan though she has dual nationality), with British Creator/FlorencePugh as Amy, fellow Brit Creator/EmmaWatson as Meg, and Australian Creator/ElizaScanlen as Beth. Watson's the only one whose American accent perpetually slips... although there is a HowsYourBritishAccent moment.

* In ''Film/GosfordPark'', American Creator/RyanPhillippe plays a character who is supposedly Scottish, but the Irish maid (played by Scottish actress Creator/KellyMacdonald) recognizes it as fake immediately.

* ''Film/ThorLoveAndThunder'' has Australian Russell Crowe playing Greek God Zeus with an inexplicable Eastern European accent (mostly Russian-sounding), which occasionally affects a vaguely Italian lilt - closer (Mediterranean, at least), but still from entirely the wrong *country*!

* In ''Film/WhipIt'', Alia Shawkat's difficulty in maintaining her Arabic accent audible in some of her deleted scenes resulted in director Creator/DrewBarrymore instructing her to speak in her natural American accent for the remainder of filming.

* Katie Cassidy slips back and forth between a Texas accent and normal American accent in ''Film/MonteCarlo''.

** Urban's accent gets better in ''Film/{{Red}}'' and ''Film/StarTrek2009'', although, in the latter, he's trying to do [=McCoy=]'s Southern accent (Creator/LeonardNimoy was so impressed he actually shed a tear in memory of Creator/DeForestKelley).

* In the BMovie ''Film/{{Werewolf}}'' (featured on [[Series/MysteryScienceTheater3000 MST3K]]) both the love interest Natalie and the antagonist Yuri gain and lose ''multiple'' accents throughout the movie. This--and the the dialog's bad grammar--culminates in the riff:

* ''Film/{{Highlander}}'': The Frenchman Christopher Lambert, in spite of being born in America, spoke almost no English when cast for the role of immortal Scottish highlander Connor. In fact, the director has claimed that he more or less recited his lines phonetically. As such, he has a great deal of difficulty maintaining anything close to a Scottish accent. There's no excuse for this in the scenes taking place in Scotland, but in the scenes in America, several hundred years later, his muddled accent actually makes sense. When a character challenges his character, "You talk funny" and asks where he's from, Connor replies. "Lots of different places." Ironically, Lambert plays opposite Sean Connery, who makes no attempt to adjust his natural Scottish accent when playing a Spaniard from ancient Egypt.

* Creator/NicoleKidman

* ''Film/{{Matilda}}:'' Playing Miss Honey, South African actress Embeth Davidtz is absolutely unable to convincingly fake an American accent. At times her inflection gives the game away, such as her use of [[FunetikAksent "NO-b'dee" instead of "NO-buddy."]] Mrs. Wormwood's ear-grating [[UsefulNotes/AmericanAccents Long Island accent]] also fades out at times (Rhea Perlman only has a slight Brooklyn accent in real life).

* ''Film/CliffordTheBigRedDog'': Creator/JackWhitehall is a British comedian, playing an American character, and several critics agreed that Whitehall's accent work was... sub-par, to say the least. This actually led to a viral video where Whitehall appeared as a guest on the Graham Norton show alongside Creator/OliviaColman. After showing a clip of the movie, Norton remarked that this was the first time Whitehall had attempted an American accent, prompting Colman to genuinely ask, "[[InnocentlyInsensitive What, in]] ''[[InnocentlyInsensitive that]]'' [[InnocentlyInsensitive clip?]]"

* ''Film/CliffordTheBigRedDog'': Creator/JackWhitehall is a British comedian, playing an American character, and several critics agreed that Whitehall's accent work was... sub-par, to say the least. This actually led to a viral video where Whitehall appeared as a guest on the Graham Norton show alongside Creator/Olivia Colman. After showing a clip of the movie, Norton remarked that this was the first time Whitehall had attempted an American accent, prompting Colman to genuinely ask, "[[InnocentlyInsensitive What, in]] ''[[InnocentlyInsensitive that]]'' [[InnocentlyInsensitive clip?]]"