Continuity mistake: Abbie and the gang are in the restaurant for dinner. Frasier has his elbow on the table over his menu and Abbie says, "In front of your father," and the camera angle now shows Frasier holding the menu. After Abbie responds to Marty's lawyer joke, Frasier's hand is back down on top of the menu.
Continuity mistake: When Abbie arrives at Frasier's apartment, she puts her purse on the coffee table; the strap is hanging between the couch and the table. When Frasier offers to walk her to the elevator, she goes to get her purse and it has flipped over with the strap fully visible - even though no one went near it.
Continuity mistake: The gang is reading through the script and Roz cues Bulldog and as she does we can see Gil has his script opened up on his knee. As the shot goes to Bulldog, Gil's script is now folded over and his pencil is in his right hand. He wouldn't have had time to change position.
Continuity mistake: When Frasier and Martin are leaving Artie's hospital room, Frasier has the door about one-third open. Just before they leave, though, as Frasier says "next time he'll stay longer", the door is open much wider. Nobody opened it wider during that time. (00:08:50)
Continuity mistake: Donny is sitting on Frasier's couch eating Chinese food. One of the containers, with chopsticks in it, is sitting on the table, near the center. In the next shot the chopsticks have disappeared and the container has moved towards the end of the table. (00:12:05)
Continuity mistake: Quite late in the show, Nikos and Frasier are sitting down talking. Behind Nikos someone picks up a glass of wine which is next to a bottle. The next shot shows a plate there as well, even though no one put one down. It disappears a couple of shots later - again, no one went near it.
Continuity mistake: Roz and Frasier are at Cafe Nervosa and she is telling him about her dream of dancing with Bruce Springsteen. At one point, her hand is on top of her coffee mug and then she lays it on the table; the next shot shows her hand on the cup again, with no time to move it naturally.
Continuity mistake: Niles and Frasier meet Donny for the first time in his office. Donny's secretary brings him a sandwich and he takes a bite out of it, in the center of the sandwich half. He starts saying how good it is, and offers the guys a bite - now the bitten part has moved and is on the outer edge of the sandwich.
Continuity mistake: When Frazier comes into his booth to begin his show, Roz is reading a book. She says "Happy Birthday" to him and we can still see the book in front of her; but in the next shot it is lying on the console next to her, without any time for her to have put it there.
Continuity mistake: Early in the show Frasier finds Daphne's engagement ring which she had misplaced. He is holding it - on the table we can see a chip bag that Daphne had used to hide her ringless hand. During the course of the scene, the chip bag appears and disappears several times.
Continuity mistake: Frazier meets his date (Cassandra) in the restaurant - she places her purse down, and it constantly moves around in different positions while they talk. Sometimes it's to her right, sometimes to her left, and one it is lying on the table with her hand over it.