Corrected entry: When Jack is introduced to Mr. Roper for the first time, the girls just say he's their landlord (no name given yet), however after Jack's talk in the kitchen with Chrissy (in which still no landlord name given), Jack storms out and starts out shouting "Look here Mr. Roper..." He still should not have known the landlord's name at this point.
Corrected entry: To avoid conversing with Cindy about Cindy's alleged pregnancy, Janet picks up an ashtray off the table and claims it's filthy and runs with it into the kitchen. None of the roommates were known to have smoked and no ashtray was seen (in The Apartment) in any other episode. What was the point of an ashtray all of a sudden?
Correction: While it might not have been seen previously, it doesn't mean they didn't have one. At that time many non-smokers had ashtrays in their homes (my grandparents did and often used it to hold change or keys). However, they may have had an occasion to have it out for something that we never saw, since we don't see every moment of their lives.
There was an episode with an ashtray and an old man came to stay with them. He was homeless and he did smoke in the episode.
The old man was just a visitor for one episode who smoked in Jack's room and said to Jack that he could use an ashtray in there (as a suggestion).
Correction: The episode with the old man had no ashtray in it. In fact, he set a small fire in Jack's bedroom and even said to Jack "you could use an ashtray in there." (Obviously indicating no available ashtray was in The Apartment for him to use).
Actually, that episode did have an ashtray - when Leo (the old man) first entered The Apartment, he asked Chrissy if she had an ashtray and she got one for him off the side table.
Correction: The trio entertained a lot, and smoking was pretty ubiquitous in the 70s. They probably had it out for a guest.
Corrected entry: When Chrissy's father finds out Jack is living with the girls, he gets angry about the living situation. But back near the start of the series, Chrissy's mother met Jack and she was given word by Mr. Roper that Jack was gay and then she OK'd the living arrangement. It's hard to believe that a married couple would not share this information, so the father should have assumed Jack was already gay and not have any problems when meeting Jack as his daughter's roommate.
Correction: Chrissy admits to Janet in the episode that her mom never told her dad that Jack was living there or they had a male roommate.
Two Flew Over the Cuckoo's Nest - S6-E7
Corrected entry: In the scene where Jack and Janet are sitting on the sofa with the doctor, Janet offers the doctor some nuts from a bowl. Then take a look at Janet's face. She begins to laugh so she lowers her head and the camera immediately shoots over to Jack who realizes the goof and adlibs something to give Janet time to get into character again.
Correction: On the DVD set of this episode (which I doubt is different than what aired, but I could be wrong), after Janet offers the "nuts", she hangs her head in shame. The camera does not shoot over to Jack, instead Janet goes into some dialogue about how she shouldn't have said said a thing and instead asks if he'd like cheese. During this time, Jack says nothing to either of them until he tells Janet "Good job!" for getting out of the situation, and tells Janet to not offer any more nuts and to not offer crackers.
Jack Bares All (a.k.a. Oh, Nurse) (2) - S6-E2
Corrected entry: When they're getting ready to make fun of Teri, and Jack is going to press the glasses onto Teri's face that leaves the rings under her eyes, he calls her "Tammy."
Correction: Jack is being as overtly obnoxious as can be, and the "Tammy" was quite deliberate on his part. Jack also did not pronounce Terri correctly, but instead pronounced it like "Teary" just to emphasize the obnoxious behavior (when Jack feels bad while holding the seltzer bottle he pronounces her name correctly).
I respectfully disagree with that synopsis - being obnoxious doesn't mean you purposely mispronounce a name. Seems that if it was on purpose, one of the cast (in character) would have corrected him. Some things slip through editing due to time frames and reshoots.
Correction: This has already been submitted and has been sitting in the corrections section for some time with a few different answers. Nobody knows the real answer but some good possibilities have been submitted.
Corrected entry: Chrissy grabs an ashtray and lighter from the living room table to give to the old man, when none of them smoke.
Correction: Not uncommon, certainly at that time, for households to have them around for guests. I don't smoke but kept an ashtray for visitors who did.
Corrected entry: When Jack is complaining about Mr. Furley's shoddy plumbing, he demonstrates the sink functions to Janet and Chrissy by turning on and off the water faucets. However, after he turns off the faucets, he demonstrates the dish rinser, which works despite the fact that he never turned either of the faucets back on.
Correction: The plumbing was not working properly. This is pretty much what shoddy means.
Navy Blues - S7-E21
Corrected entry: Jack goes into the kitchen with Janet to get "Jim Bob" Furley a glass of brandy. When Jack returns from the kitchen to hand Furley his drink, Jack trips and spills the drink all over Furley, causing Furley to give the Partnership to Jack's Navy Pal, Bill. Furley then excuses himself and heads to the bathroom to clean up. But Furley isn't supposed to have met Jack before, so he wouldn't know where the bathroom is. He goes right to it anyway without asking where it is. Lucky Bill didn't notice.
Correction: As you state, Bill didn't notice, so it was just a bad decision by a character, not a mistake. But it's also possible Bill did notice and figured "Jim Bob" guessed correctly or knows it's not that hard to guess which door is the bathroom in a small apartment.
Correction: Also, considering usually the bedroom doors were left open in most episodes and Jack came out of the kitchen with the brandy, so the only other door would be the bathroom, so it would even be easy for even a stranger to figure out.
Corrected entry: Janet mentions that Roper's rule of living in the building is no pets or babies allowed. Pets is one thing which is common in many apartments, but it would be unlawful to not allow babies in an apartment building.
Correction: While it would be illegal, landlords sometimes do illegal things, such as discriminate. It would also be illegal for him to deny renting to a straight man living with two women. But, Mr. Roper has been renting a long time and it wasn't until the Fair Housing Act of 1968 that made it illegal to deny renting to people with children (so less than a decade ago when the show was made). Not only may Mr. Roper be unaware of the law, but potential tenants may also be unaware of the new laws and just accept his terms. It would only be a mistake if a court ruled that Mr. Roper was acting legally.
Corrected entry: In the scene where Janet is about to leave and Cindy says she misses Jack, it cuts back to Janet - you can see the head of a crew member walking through Jack's bedroom right before it cuts to the next scene. (00:19:00)
Correction: Larry is in Jack's room, and subsequently, it could very well be his head we see behind Janet because in the next shot, it's Larry coming out of the bedroom asking if Janet has a screwdriver. It actually looks as if they streamed the two cuts very well, the head behind Janet could very well be explained as the first steps of Larry coming out of Jack's bedroom.
Corrected entry: Jack tells Mr. Roper (while at the Regal Beagle) that the women in the Beagle are "fantastic." Roper gives Jack a strange look (about his acting straight instead of gay, which he always thought Jack was). Jack then corrects his sentence (using gay personality and gestures). Roper is no longer the landlord of Jack's building so Jack didn't need to correct himself in front of him or care if Roper still thought he was gay.
Correction: Just because Roper isn't the landlord any more, he would still keep up the lie, even if he thought he wouldn't get in trouble. Jack simply felt it was easier to keep pretending to be gay to avoid telling the truth (in fact several of the antics in the show would have been avoid if Jack just told the truth after some mix up or confusion, but it was his nature to keep up the lies). Even so, Jack may still feel he could get in trouble somehow if he told the truth.
Jack Bares All (a.k.a. Oh, Nurse) (2) - S6-E2
Corrected entry: In the party scene, Jack and Larry give Terri glasses to put on that give her black circles under her eyes. Jack calls Terri Tammy when asking if she's been getting enough sleep.
Correction: Jack is supposed to call her Tammy because he is trying to get rid of her.
Correction: That reasoning doesn't sound right. He was trying to get rid of her-yes, but it seems more likely John Ritter simply made a mistake in the script but it was not spotted or corrected due to the fact the producers of the show rarely allowed retakes so many ad-libs and errors were sometimes left in.
Correction: I agree this mistake is valid. While there was a line in the beginning where he jokingly says "what's your name again", that was part of the act as if she was a random volunteer. But then he calls her his "lovely assistant, Teri", then called her Tammy, but then once again calls her Teri during the "act", before he shot ink on her dress.
A Hundred Dollars a What? - S5-E3
Corrected entry: Chrissy walks out of the kitchen carrying a fresh pot of HOT coffee with her hand flat on the bottom of the glass pot. She may be dumb, but she's not invulnerable to pain.
Correction: Chrissy is actually holding the coffee pot with a pot holder.
Corrected entry: Mr Roper can hear the roommates' bathroom through the sink and the pipes, indicating that they are right on top of each other. However based on how the apartments are set out in the building and the locations of each bathroom in their respective apartments, it would be impossible for him to hear the bathroom so, if at all.
Correction: If you're familiar with the show, the Ropers' front door and the roommates' front door upstairs are both on same side of the building separated by one flight of stairs. The inside of each apartment we see (as viewers) are from opposite sides. So when we see the Ropers' bathroom all the way right, we also see the roommates' bathroom all the way left. So in theory more or less, they ARE approximately on top of each other.
Upstairs Downstairs Downstairs - S5-E1
Corrected entry: Jack's nurse date wears a wedding band.
Correction: Doreen is wearing a ring with a raised dark center stone - it glistens as she moves her hand. It looks like a regular fashion statement ring that women wore/wear on either their right or left hand; nothing indicative of a "wedding band" at all.
Explain? Alright. I watched the episode, and Doreen's ring does not look like a wedding band. It appears to be just a normal ring with at least one raised dark gemstone.
Correction: Generally the idea of seeing a character wearing a wedding ring as a mistake is because in real life the actor or actress forget to take off their wedding ring. In real life, Lee Crawford (who plays Doreen) was divorced in 1978 and wasn't married or engaged at the time of shooting the episode. So it's just a character choice to wear a ring on her left hand and doesn't mean she's married or engaged.
The very point being, that she is wearing on one on her hand, when she's supposed to be single in this episode. So the mistake stands.
No, because it's a character choice. People who are single wear rings on their left ring finger for a variety of reasons, none of which indicates it's a wedding band or that they're married.
Correction: They could have told him Roper's name earlier in the episode, off-screen.