The One Where Chandler Crosses The Line - S4-E7
Corrected entry: When Ross is playing his keyboard for the gang, he presses a note twice and gets a single note. The next time he presses the keyboard the accompaniment starts automatically. Ross would have had to press a settings button to get the accompaniment to start automatically on a keyboard note press. However, we don't see Ross press any settings buttons.
The One With Chandler In A Box - S4-E8
Corrected entry: At the end, when everyone is on the balcony watching Chandler and Kathy, Monica sees a guy robbing a purse, and Joey goes to call the police. When he comes back, he has the phone, but he says nothing, even though he came back way too quickly to have made the call.
The One With The Invitation - S4-E21
Corrected entry: When the gang minus Rachel receives their invitations, Phoebe states that Ross let Ben address hers, and shows the rest of them. We see that the envelope has a full address consisting of four lines. Chandler then enters, and about 10 seconds later we see Phoebe's invitation again, this time only having an address consisting of one line.
Correction: Look carefully at Phoebe all through this scene. We see Phoebe with her invitation, and it has her name and address on. She then takes off this envelope AND PUTS IT IN HER LAP. Inside this envelope is ANOTHER envelope with just her name on. The addressed envelope stays in her lap for the duration of the scene, and when we see the envelope with one line, this is the 2nd envelope.
The One With The 'Cuffs - S4-E3
Corrected entry: When Joey is reading the newspaper while Chandler and Rachel as discussing Joanna, a blue and white cup appears in front of him.
Correction: The cup doesn't just appear, it's the same cup that was in Chandlers hand earlier which he puts on the counter.
The One With The 'Cuffs - S4-E3
Corrected entry: After Rachel sees her boss Joanna in the guys' apartment, Joey's bedroom door is shown shut, but is open in a subsequent shot, though no one went near it.
The One With Ross's Wedding, part 2 - S4-E24
Corrected entry: In the scene where Rachel is on the plane telling the guy across the aisle about the history of her and Ross, the guy sitting beside her interrupts and says something like, "You are a horrible horrible person". If you look at his watch throughout the scene, it switches from having a leather strap (brown or black), to having a metal band, and then back again.
Correction: His watch consistently has a dark leather strap, it never changes.
The One Where Chandler Crosses The Line - S4-E7
Corrected entry: In the episode where Chandler tells Joey that he kissed Joey's girlfriend Cathy, Chandler walks in and tells Joey that he wants to talk. Joey says OK and turns off the TV. After Chandler tells Joey what happened, Joey is angry and says "I will not watch your TV" and turns the TV off again.
The One With All The Wedding Dresses - S4-E20
Corrected entry: The wedding dress Rachel wears in the pilot is extremely similar if not the same dress she wears in The One With All The Wedding Dresses (season four).
Correction: It's meant to be - she kept the original dress from her wedding (she arrives wearing it).
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.
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.
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 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 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 Joey's Dirty Day - S4-E14
Corrected entry: Phoebe goes to Rachel, and to comfort her says "Ah Pheebs," and acts surprised when Rachel tells her that Pheebs is short for her name and is not just what they call each other. However, in the previous episode, The One With Rachel's Crush, Rachel says "Mr. Pheebs" and we see Phoebe obviously happy that Rachel has used her nickname as her false identity.
Correction: I agree, she reacts to it being used on her behalf as she also gestures to herself, she also answers to this nickname in many previous episodes before this statement is made and although the joke is funny they would have been better off using it earlier than season 4.
The One With All The Rugby - S4-E15
Corrected entry: When Chandler is at the airport with Janice there is a last call announcement for his flight to Yemen, and Yemen being mentioned as the destination in the announcement. However there is no such city as Yemen (the capital of Yemen is San'a) and the destination of a flight should be the destination city, not the country.
The One With All The Rugby - S4-E15
Corrected entry: When Ross, Emily, Phoebe and Joey go back to the coffeehouse after Ross gets the crap beaten out of him, he says to Emily "are you kidding? I just made a man twice my size cry. I haven't done that since I was four and I washed my Dad's Porsche with rocks." But in series two when Richard has a "twinkie in the city" (Monica), Jack Gellar comments on how "I turned fifty, I got the Porsche, you've got your own little speedster." If Jack Gellar was fifty when Ross was four, that would make him around seventy-six. He's looking pretty good for a 76 year-old man isn't he?
The One With The Embryos - S4-E12
Corrected entry: The plot hinges on the girls losing the Lightning Round because they don't know what Chandler's job is, but there is no reason for it; as there was no penalty for a wrong answer, they could have simply answered wrong and moved on to the next question. Both teams had done this already, so the girls knew it was an option; they just conveniently forget it so the plot can move forward.
Correction: They knew they were running out of time and this could be their last question, so didn't want to waste time by passing, especially since they thought they knew it, or could guess. No guarantee the next question would be any easier. Entirely normal behaviour for a quiz, rather than a convenient plot choice.
Correction: The shot switches to the gang at least twice after the single notes and before the accompaniment kicks in. Ross would have had enough time to press a button during these moments.
tw_stuart
But if he was always going to play them the same song, why wouldn't the arrangement start straight away instead of just the time when Chandler says 'oh my god play'. He then completely switches keys which also makes no sense.