Continuity mistake: Near the end of the show, when Niles, Frasier, and Martin are at Duke's, Niles says, "I'm not here just for you, Dad" and he puts his hand on Marty's shoulder. The next shot shows him standing about two feet away, with his hands by his side. (00:21:20)
Continuity mistake: Frasier is sitting on his couch with Poppy, dropping hints about having an arts show on KACL - she has her hands folded on her knee. As Daphne says "he means your mother", the shot changes, and Poppy is suddenly holding a glass of wine, with no time for this to have happened.
Continuity mistake: Similar errors occur in two different scenes: in the first breakfast scene, the coffee pot is sitting on the table but in the next shot Daphne is pouring herself a cup, with no time for her to have naturally picked it up. Later in another scene, Niles is there for breakfast, picks up the pot, and pours himself some coffee. In the next shot, the pot is on the table, again without enough time for him to have put it back.
Continuity mistake: When Frasier is talking to Patrick Stewart (who is putting his coat on) in Cafe Nervosa, the collar on Patrick's coat fixes itself between shots, without him doing anything to it. In particular, one of the lapels is stuck under the coat for one shot and is suddenly normal in the next shot.David Mercier
Continuity mistake: Martin goes out to a baseball game with a famous writer that Frasier and Niles admire. While he is out, they read one of his books he accidentally left behind. When the author returns, he ends up holding the pages of the book in his hand, whilst standing in front of the fireplace. In one shot he is holding them in his left hand, but when the view cuts to another angle, he has them in his right hand. This occurs just before he goes outside to throw the pages off the balcony. (00:20:25)Padzter
Continuity mistake: While Marty and Daphne are watching the basketball game on TV, he says "it's completely different", the remote suddenly appears on the table beside him; it wasn't there before and wasn't in his hand. A couple of shots later, when he yells "unbelievable!" it's gone again.
Continuity mistake: At the end of the episode after Sam mentions stewardesses he claps his hands, and his seat belt (which was caught on something) moves across his chest to the regular position. Cut to a wide shot of the car and Sam's seat belt is back to the position it was in before. (00:21:05)Jon Sandys
Continuity mistake: When Sherry brings in the bottle of wine, it's in a paper bag which is twisted around the bottle when she puts it on the coffee table. The next shot shows the bag has been loosened around the bottle and is quite wrinkled. No one touched it in that short time.