Continuity: There was an episode in which Martin attempts to end a feud between Frasier and Niles by telling a story about his detective partner. He starts with the line, "I never had a brother...", but in the episode about Frasier's cousin Nikos getting married, Martin's brother Walt was introduced.

Continuity: Frasier (and later the others) come back to his apartment to avoid the rain - they shake off umbrellas, and we even hear the storm at the very start of the scene. However there's no rain on the balcony - can't be covered, as we see in "call me irresponsible" during the obligatory sex scene that when it's raining the balcony gets soaked. Submitted by Jon Sandys

Continuity: When Frasier and Niles are eating the steaks at the restaurant that Martin brought them to, in some shots you can see Frasier's baked potato, and in others from the same angle it is not visible.

Plot hole: Why can Niles hear what Frasier has said when he is inside the sensory deprivation tank? The whole point of these are that you cannot hear anything happening outside, so Frasier's ranting shouldn't have been heard inside. Similarly, why did the writers even have this scene with Frasier trying to talk to "Maris" when she was supposed to be inside it? Clearly they didn't quite know how soundproof they are.

Continuity: Roz and Frasier are in Cafe Nervosa near the start of the show and her sunglasses are on the table. However, in a shot over Frasier's shoulder, they are not there anymore. They reappear in the next shot.

Deliberate "mistake": About halfway through the show, Roz and Daphne are in the kitchen talking. Daphne pours water into the teapot - but there is no steam coming from the kettle, nor any sound of a boiling/just boiled kettle. No self-respecting Brit would make tea with water that wasn't boiling.

Continuity: Right at the start, the tapes Roz is holding change hands at least twice. Although you can't often see both her hands, you sometimes see one and yet they still switch by the next shot.

Continuity: When Martin lies back in the chair for the first time, it changes how slanted it is in the first two shots. Submitted by omegaman3000

Continuity: While Martin is saying grace, Eddie is sitting right on his backside staring at Frasier, who yells "will you stop staring!" The next shot, from behind Eddie, shows him noticeably leaning over on one haunch, even though there was no time for the change.

Revealing: The guy who plays Clive in this episode has one of the most appalling accents I have heard. He's apparently from Manchester, but sounds like a sort of cockney South African. His accent slips around all the time; it's very poor. I wouldn't normally submit it, but his is so shockingly bad I doubt anyone would be fooled into thinking he was British.

Continuity: The time on Niles' musical clock changes time suddenly and frequently between shots, once from 9.00 to 10.55 to 11.25 almost instantly.

Continuity: In the 8th episode of season 11, "Murder Most Maris", Frasier claims to have been "punched in the face yesterday by a man now dead". When he says this, two nights have passed since the murder. The next day Niles panics at the café and then sleeps for 20 hours. This time Frasier claims he was punched in the face three days ago by a man now dead, when by now it has been at least four days.

Continuity: Roz is on the phone with a guy, trying to set up a date for Daphne's wedding - in one shot her hand is on her little black book, and in the next it is in her lap, with no time for natural change.

Continuity: During the opening credits, Frasier is playing the piano and Martin is going through papers on the table. When Marty says "I don't know, Eddie, must you?" there is something pink lying on the table. The shot goes back to Eddie and then back to the table, but the pink item has disappeared.

Continuity: Frasier meets Heather in the bar. She is reading a book which she has propped open on the bar, but as they talk, she takes it off the bar and closes it in her lap. A couple of shots later we see book is back on the bar and she is closing it again. (Time)

Continuity: Marty is sitting at the dining room table and for a couple of shots he's eating potato chips with his right hand; the shot changes to him eating with the other hand, with no time for a natural shift. (Time)

Continuity: Marty is in Cafe Nervosa and Roz comes in; he puts his newspaper aside. The next shot shows his hand is still on the paper; this time the page is different. Through the scene we sometimes see a page of text and sometimes a page of ads.

Continuity: Niles and Marty are in the kitchen and Niles is coaching Marty on how to pretend to be Jewish. While they are talking, the lid on the sugar bowl goes from being on properly to being askew, even though no one touched it.

Continuity: When Frasier is in the conference room with Roz, his binder changes from shot to shot. Sometimes there are 4 brightly coloured tabs at the top, sometimes only 2. The same shots show a change in the papers on the table too.

Continuity: When Frasier is in his apartment, trying to get Daphne away from Niles, the book and decorative pieces on his coffee table change position from shot to shot.