The One With Ross's Wedding, part 1 - S4-E23
Corrected entry: Rachel and Phoebe are in the girls apartment and Phoebe tells Rachel to bring her some tepid water, a piece of chocolate and some photos of Ross. In one shot she is holding the water and chocolate, but in the next, a box of photos appears as well.
The One That Could Have Been, part 1 - S6-E15
Corrected entry: In the episode 'The One That Could Have Been' Phoebe says she wonders what would have happened if she'd taken the job with 'Meryl Lynch', but in the dream world, she works for a different company, Something Gearman.
Correction: Just because she would have taken the job with Meryl Lynch doesn't mean she would have stayed there forever. Maybe the place she works in the episode was better.
The One With Ross's Wedding, part 1 - S4-E23
Corrected entry: In the episode 'TOW All The Wedding Dresses', Monica picks up Emily's wedding gown for her at the bridal shop and then wears it for most of the episode. However, in the episode 'TOW Ross's Wedding', Emily is seen wearing a completely different dress.
Correction: Emily is wearing the same dress that Monica picks up, only Emily wears a jacket over the dress. The dress also appears to have had some beading added to match the jacket, but it's otherwise identical.
The One Where Rachel Smokes - S5-E18
Corrected entry: At the very end of the show when Chandler is looking for Rachel at her work he takes a drag off of Rachel's bosses cigarette. However we never see him exhale any smoke. He just imitates taking a drag.
Correction: He mumbles his words a bit - likely he just didn't exhale much. He definitely takes a proper drag though - you can see the tip glow.
The One Where Emma Cries - S9-E2
Corrected entry: In the episode where Rachel comes home from the hospital, she and Ross realize they forgot diapers. Ross goes out to get them, and a muffin for Rachel. Soon after he closes the door, Emma starts crying. A little while later, they come back to the scene, and Emma is still crying. Phoebe said Emma had been crying a few hours. They jump to the scene where Ross is getting Rachel's muffin. He had just gotten back from getting diapers. It took him a few hours to go get diapers?
The One Where No One's Ready - S3-E2
Corrected entry: Chandler claims that he steals Joeys underwear BECAUSE Joey stole his "essence" however, the only time Chandler goes into his apartment is to get changed, which is before Joey steals the "essence" of the chair, thus Chandler would have had to steal Joey's underwear before Joey takes the chair cushions, not because of it.
Correction: But Joey annoyed him by stealing the chair in the first place, so he was probably just being petty.
The One With The Flashback - S3-E6
Corrected entry: In 'The One With The Flashback' (episode 6, third series) Rachel appears to meet Chandler for the first time while celebrating her engagement to Barry, in the bar which was later to become the coffee house. In 'The One With The Thanksgivings' (episode 8, fifth series) it is apparent that she has already met Chandler twice at Ross and Monica's parents' house, once at Thanksgiving 1987 and once in Thanksgiving 1988.
The One With The Routine - S6-E10
Corrected entry: At the end of the episode, Ross and Monica complain because they didn't get to perform their routine on the platform (because it cut to midnight too quickly). But the director must have known exactly when the filming would end, so why would he have put Ross and Monica on the platform 10 seconds before the end of filming? It's not just that he wants them in the background for a few seconds or something, because he wanted them for the blooper show (not the final show) and they didn't get a chance to dance up there at all.
Correction: Quite simply, he wants them to stop bugging him about performing on the platform. They have been in his face all night long, doing dance moves that (in his eyes) are not good enough, so putting them there in the last few seconds shuts them up and gives them no base for later complaints, while the same maintaining the quality of the show by filming the platforms with decent dancers.
The One With Joey's Fridge - S6-E19
Corrected entry: In this episode The One With Joey's Fridge, Rachel's hair is just a few inches past her shoulders and in the very next episode, The One with Mac and C. H. E. E. S. E. Rachel's hair has magically grown down to her waist. No one else's hair has changed, and no mention of it in these episodes either. I guess they were just hoping no one would notice it.
Correction: She could have had hair extensions put in, and since we don't see every second of their lives on camera, we could assume her friends already knew about it and did not mention it.
The One Where Joey Speaks French - S10-E13
Corrected entry: In 3-7 Phoebe mentions that she can't say "croissants" and then does so perfectly. In this episode she is fluent. She had mentioned in yet another episode that she learned it while living on the streets and met friends behind a dumpster to learn it, so it's not she learned between episodes.
Correction: The whole joke is that she can say it but thought she couldn't. She doesn't say it in the context of not being able to speak French.
The One With The Late Thanksgiving - S10-E8
Corrected entry: It's not possible for Rachel to have an old key that works. In "The One Where Rachel Tells" after Treeger knocks down the door, he states that the door will need a new lock.
Corrected entry: Whenever exterior shots of Ross' apartment building are shown, it is across the street from Monica's apartment building, which is the side that doesn't have balconies on, however Monica and Chandler are able to see into Ross's apartment from their balcony. Even if their apartment does have a balcony on the back, Ross's building is on the wrong side of theirs.
Correction: Ross' apartment is across the alley, not across the street. Ross lives on the same block and the apartments face each other across an alley.
The One With The Late Thanksgiving - S10-E8
Corrected entry: Surely the adoption office won't have anyone in it on Thanksgiving. Why do they get a call then from them. (00:20:40)
Correction: It's not that strange that someone would be in on Thanksgiving. In one episode Chandler and the people in his office had to work on Christmas eve and New Year's eve, so why couldn't the adoption office have someone there on Thanksgiving?
The One Where Rachel is Late - S8-E22
Corrected entry: At the end of the episode Rachel's water breaks when she is sitting down being kissed by Ross. Despite this her skirt is completely dry when she and Ross walk out of the door to go to hospital.
Correction: When a water breaks, water does not always gush out. For some women it's just a tiny little trickle they can just feel.
The One With The Fertility Test - S9-E21
Corrected entry: In the scene where Monica and Chandler are about to get tested in the clinic, Monica says, "My tests are down the hall." But after she says, "I've got a vaginal exam to get to," she turns and walks the opposite way she of where she said her tests were.
Correction: Character mistake.
The One With The Flashback - S3-E6
Corrected entry: In the flashback episode, Chandler and Monica are in the bar (which is soon to become Central Perk) and Rachel is in the same bar with her friends before she is due to marry Barry. When Chandler overhears Rachel - a complete stranger - say she wants one last fling, he tries to flirt with her, but she dismisses him. Monica then says "I know her" and talks to Rachel briefly with Chandler present. In fact, as revealed in later episodes, Chandler and Rachel knew each other when he was in college with Ross and Rachel was in high school with Monica - in fact they even made out at a college party.
Correction: Then the mistake is in subsequent episodes, not this one. In any case, Chandler simply didn't recognize Rachel.
Or since Rachel was drunk at the college party, she has very vague memories and doesn't remember that night very well.
Rachel and Chandler had previously met several times before the college party and she was sober. Chandler was at the two consecutive Thanksgiving dinners at the Geller house when both Rachel and Monica were in high school. Rachel gave Monica hints on how to get back at Chandler for having called Monica "fat" the previous year. Rachel and Chandler should have remembered this.
The One With Phoebe's Uterus - S4-E11
Corrected entry: When Phoebe is considering carrying her brother's babies, her mother gives her a puppy to look after. Chandler seems very comfortable with this puppy. However, in Series 7, when Phoebe brings a dog back to Monica's apartment, Chandler says he is terrified of dogs - especially puppies.
Correction: He doesn't seem very comfortable, he just doesn't make a visible reaction. Judging by the dialogue in season seven he hasn't wanted anyone to know about his fear of dogs, so naturally he would try to act as if the dog didn't bother him in season four.
He was covering up his fear of dogs with a dog allergy so this is still a mistake.
The One Where Rachel Tells... - S8-E3
Corrected entry: After Rachel tells Ross she is pregnant with his baby they go to see a midwife who performs an ultrasound scan. However, she never once touches Rachel with the equipment, yet when they look at the screen they are told "There's your baby," and they can see it moving and the heart beating etc.
Correction: Most pregnant women will tell you there are 2 types of ultrasounds. It was likely that they were portraying an Intravaginal Ultrasound, hence no need for her to be near Rachel's stomach.
But it was still weird that she didn't complain when they performed the intravaginal ultrasound on her (if that's the one they did on her). It's still a little painful and you feel every movement in you.
The One With The Free Porn - S4-E17
Corrected entry: When the doctor is explaining to Phoebe about the triplets she says that "giving birth to three babies is not that different than giving birth to one". However, most triplets are born prematurely and by Caesarian section (which the doctor doesn't mention).
Correction: This mistake is self correcting. The Doctor was expressing her professional opinion that 'giving birth' (i.e. naturally, not by caesarian) to three babies was not much different to giving birth to one. The likelihood of a premature birth could easily have been discussed at an earlier stage.
The One With Barry & Mindy's Wedding - S2-E24
Corrected entry: Monica and Richard both attend Barry and Mindy's wedding as guest, but they have never met either the bride or groom. So it doesn't make sense for them to be there, other than for a location for their breakup.
Correction: In the side shot we see her reaching down as she gets to Phoebe - a close look at the table and you can see that she's picking up the photo box, it's just hidden behind Phoebe.