History Main / LeftItIn

* ''VideoGame/TheElderScrollsIVOblivion'' includes several examples of radiant NPC dialogue being messed up and repeated, with their repetitions being left in the game. In one case, you can hear a voice actress mutter “Wait a minute, let me do that one again...”

* In a review for ''Captain America'', WebVideo/ToddInTheShadows is so busy talking about the director of the movie that he fails to notice Elise, WebOriginal/ObscurusLupa, and WebVideo/TheNostalgiaChick stacking several plastic skulls on his crotch. He eventually does notice, and...

* All of ''LetsPlay/TheKingOfHate'''s video game playthroughs are completely live and unedited. Sometimes this works to his benefit, and sometimes this leads to stuff like the time [[EpicFail he spent several hours trying to catch a single hook in]] ''VideoGame/SlyCooperAndTheThieviusRaccoonus''.

* The director of ''VideoGame/MetalBlack'' suspected the game's grim themes of human extinction would not be accepted by Taito's executive, so he cooked up the "dummy story" to present to them, a more typical shmup ExcusePlot about fighting the bad guys of ''VideoGame/GunFrontier''. While the final game reflects the original intention, the "dummy story" was accidentally printed in the manual for the UsefulNotes/SegaSaturn port.

-->'''Homer:''' Uh, you can edit out that part, right?
-->'''Kent:''' Homer, we're live from coast to coast.

* In the original USA release of ''VideoGame/CrashTeamRacing'', the secret unlockable character Penta Penguin's voice lines are mostly made up of realistic penguin sounds - aside from the placeholder lines recorded by programmer Gavin James that were accidentally left in, which has the little penguin say "Penguin yay one," "Penguin yay 2," etc. in a flat, bored sounding tone. This was thankfully fixed in the PAL and Japanese releases. ''VideoGame/CrashTeamRacingNitroFueled'' has proper voice acting for Penta, but references the original error by having one of his voice lines clearly audible as "Penguin yay 1".

* In the original USA release of ''VideoGame/CrashTeamRacing'', the secret unlockable character Penta Penguin's voice lines are mostly made up of realistic penguin sounds - aside from the placeholder lines recorded by programmer Gavin James that were accidentally left in, which has the little penguin say "Penguin yay one," in a flat, bored sounding tone. This was thankfully fixed in the PAL and Japanese releases.

* At one point during Shadow's story in ''VideoGame/SonicTheHedgehog2006'', a voice actor messes up a line and re-reads it. [[https://www.youtube.com/watch?v=WxMME64yVE4 The full clip was left in the final game, mistake and all.]]

* On Star Trek: The Next Generation episode “The NakedNow”, after Data becomes “drunk” and has a conversation with Captain Picard on the bridge, Brent Spiner decided to ad lib attempting to put his his arm on the back of the chair Worf was sitting in and deliberately fall over, thinking it would edited out in post production.

* In the original USA release of ''VideoGame/CrashTeamRacing'', the secret unlockable character Penta Penguin's voice lines are mostly made up of realistic penguin sounds - aside from the placeholder lines recorded by programmer Andy Gavin that were accidentally left in, which has the little penguin say "Penguin yay one," in a flat, bored sounding tone. This was thankfully fixed in the PAL and Japanese releases.

* ''VideoGame/HitmanBloodMoney'' had an infamously hilarious example of this, where if the player looks up a crate of lobster in one level, the FlavorText simply reads "Allan please add details". This was definitely a developer mistake (the "Allan" in question was former Creator/IOInteractive artist Allan Hansen), and became so memetic among fans that future games tend to include it the phrase as an EasterEgg.
* ''VideoGame/BioShockInfinite'' has an amusingly meta case of this regarding the l)etter Elizabeth receives from [[spoiler:[[HelpYourselfInThePast her future self]]]], which is written in a cipher that she quickly figures out, though exactly what it says is left unclear to the audience. However, it turns out the code graph [[ChekhovsGun was available all the way back at Elizabeth's first appearance as a then-meaningless background element]], but if one goes through the work of using it to decode the letter, they'll end up finding it reads "I AM A CODE: I SHOULD PROBABLY BE CHANGED OVER FOR SOMETHING MUCH MORE OFFICIAL IN THE FUTURE, BUT I'LL DO AS A STAND-IN FOR NOW I SUPPOSE." Whoops.

* Used in ''WesternAnimation/BarbieAFairySecret''. Raquelle tries to discuss the best part about the film she and Barbie costarred in, only for Barbie to show up. Unfortunately, they're at a live coverage of the premiere...

* Creator/EddieIzzard: This trope is practically a catchphrase of his, saying "We'll cut that out" usually once per show.

* Fletcher's "I will fuck you like a pig!" line in ''Film/{{Whiplash}}'' was flubbed; it was supposed to be "I will gut you like a fucking pig!" J.K. Symonds asked to have it taken out, but Damien Chazelle ultimately decided to use it as it was out-of-nowhere funny.

* On ''Series/TheMaryTylerMooreShow'', Mary is interviewing a male author with the intention of cutting in a tape of Murray asking the questions later. At the end, the author asks Mary out. The final result that is broadcast shows Murray being asked out by the author.