Continuity mistake: When Roz is getting ready for the reception at the convention, her wrap is hung neatly over the back of the couch. After she answers the phone and passes it to Frasier, the wrap is suddenly opened up and draped much more messily over the couch. Her purse has also changed position on the coffee table.
Continuity mistake: The gang from the radio station is at Frasier's rehearsing for the radio play - Gil is sitting to the right of Marty's little table - he leans towards the table and puts his hand around a bottle of water but in the next shot he is pulling back from the table with a pencil in his hand, not the water. At the same time Bulldog, next to him, while Gil is reaching for his water, is holding his own water in front of him. When Gil pulls back with the pencil, Bulldog's arm is pulling his arm back from the left too.
Continuity mistake: Daphne asks Frasier about his son's birth and he says that he held Frederick for the first time while Lilith was screaming at him that he would never be allowed to touch her again. But in Cheers, in the episode "The Stork Brings A Crane", we learn that A) Frasier was not present when Frederick was born and B) When he finally got to see his son for the first time, Lilith was not angry with him.littlestar
Continuity mistake: After Frasier watches the video of Eddie, he tosses the remote on the coffee table. When Niles comes in a short time later, the remote has disappeared, but when Niles asks, "Aren't you going to ask me what's up?" we can see the remote again, on top of the manila envelope. It disappears and reappears throughout the scene.
Continuity mistake: When Frasier is first looking at the magazine article featuring Madeline, we can see the page opposite the one he's looking at. The next shot shows a different page, even though he is supposedly looking at the same one, all the time exclaiming about how great she is.
Continuity mistake: During the opening credits Roz and Frasier are sitting on his couch working. Roz is telling him that she has a date the next day - he is holding a magazine. But as she says "a month", the shot goes back to Frasier and he's holding papers rather than the magazine.
Continuity mistake: This is a mistake within a mistake: Niles and Frazier are trying to get the wrapped presents out of F.'s apartment and replace them with others, to play a trick on their dad. They are getting completely mixed up, and presents are being taken out and then returned by mistake, mostly by Frasier. At one point Niles has a pile of gifts which he puts down on the table behind the couch - the shot shows him holding them, but the next shot shows a completely different pile of presents, even though it is supposed to be the same pile. Frasier picks this pile up. It soon changes again in the next shots.
Continuity mistake: Frasier and Niles are looking at the report the private detective gave them on Sherry - Niles is holding one sheet apart from the others but as he says "it does bode well for Dad", the papers are all together again, with no real time for this to occur.
Continuity mistake: While Frasier and Marty are in the kitchen arguing about Sherry, his can of beer moves from the right side of the counter quite a distance over to the left of the dishes he broke. The sugar bowl and jam pot also change positions during the same shots.