Corrected entry: The first version of Central Perk's logo, seen from season 1, presents a perspective error on the right top corner of the left cup of coffee. Some seasons later, the logo receives a tiny correction in the same area, that makes the perspective "OK" to the eye. The cup line straightens up, and the steam is brought a little closer to the ribbon containing the name.Gui Petrini
Corrected entry: Across the whole show, the infamous wall in Rachel's room / guest room (Monica's apartment) changes. When the room is not being filmed, the wall is as normal, but on quite a few episodes, when the room is actually used for scenes, the wall is much shorter. In both the episode where Ross buys Phoebe a bike, and where Phoebe and Rachel have to live with Monica after their apartment caught on fire, people are able to walk straight into the room without the wall being in the way.
Corrected entry: Joey is shown moving into Chandler's apartment and meeting everyone for the first time approximately one year before Rachel showed up. It is also mentioned that it is a warm time of year, indicating that it is set during the summer months. However in 'The One with All the Thanksgivings' (series 6) Joey is shown living with the Friends by Thanksgiving (i.e. November) 1992.
Corrected entry: In episode 8.15, Phoebe accepts saltwater taffy treats from Ross saying she has never eaten them before when in episode 2.23, she mentioned that her then boyfriend, Ryan, a guy who is in the navy, gave her saltwater taffy for playing her guitar because he didn't have any change.macaroon
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.l2007w
Corrected entry: Matthew Perry was so famous for missing his mark while taping that he developed the backward slide that you see him do in almost every show. He would come bounding into his scene slide backwards looking down for his mark and then hit it. (Per the tour guide at Warner Brothers Studio).Boobra
Corrected entry: The Spanish subtitles for this show are laughably bad. Across the first seven seasons, the subtitles routinely mistranslate what the actors are saying. In the worst cases, they omit whole sentences. Many times, they use words that don't exist in any Spanish dictionary.
Corrected entry: There's an impossibility with the view out of the guys' apartment. Take a look at the hallway set: On the left there's the door to their apartment, then a wall, then the stairwell, which runs on the other side of the guys' kitchen/bathroom/living room. Yet when you go inside and see that same wall, it's got windows that show a direct view of outside. Those windows could only show a view of the stairwell.
Corrected entry: Every time, when a shot from outside is shown, showing Monica's building, then turning to show Ross' one, we can see that there's a street in the middle. However, when we see Monica's apartment, inside, and we see the balcony (and being Ross' one in front of this one) we see that there's no street in the middle of these ones, there are more buildings around them.
Corrected entry: Over time, the fooz ball table in Chandler and Joey's apartment has a glass top. In some episodes, there is a glass top and items are set on top of the table, such as mail - or they even eat meals on it. In other episodes, there is no glass top and they reach into the table to retrieve the ball, move the players, etc.
Corrected entry: At one point Ross goes out with a girl whose father is played by Bruce Willis. In The One With The Nap Partners, Ross and Joey are really excited because they rented 'Die Hard' which stars, Bruce Willis. Monica's credit card is stolen in the 1st series by a woman who hated the film 'Dead Poet's Society', in a later episode Robin Williams turns up in a cameo role. It would be interesting to see who stars in those films in the Friends 'Universe'.