Frasier's Imaginary Friend - S5-E1
Continuity mistake: When Frasier is talking to Niles and Martin in the restaurant (when he is supposed to be meeting Kelly) and the level in his wine glass alternates between being half full and almost empty and back again.
Frasier's Imaginary Friend - S5-E1
Continuity mistake: When Frasier gets up to get out of the plane seat between the married couple, he is clutching his coat and boarding pass in his left hand/arm but when he reaches the aisle, they are in his right hand.
Frasier's Imaginary Friend - S5-E1
Continuity mistake: When Marty does his exercises, Eddie watches from the recliner and his bottom is just about in the center of the seat, but as Daphne heads to the door, his posterior is much closer to the arm of the chair, even though he never moved.
Frasier's Imaginary Friend - S5-E1
Continuity mistake: Near the start of the show, Daphne is helping Marty with his exercises and as she goes to answer the door, the towel on his little table changes position noticeably.
Frasier's Imaginary Friend - S5-E1
Continuity mistake: At the beginning of the show, Frasier is on the plane sitting next to a woman who finds out he's only on there because he wants to pursue her. She asks the flight attendant if she could change seats - but the shot before showed that the attendant had completely walked by their seat but when the woman asks her if she can move she has not passed their seat yet.
Continuity mistake: Frasier is reading the newspaper while Eddie stares at him. He picks up his coffee and we can see he's reading the back page of the newspaper, but from the angle over his shoulder he is reading the front page. It goes back to him reading the back page as he says "you will not distract me" to Eddie.
Continuity mistake: Marty and Sherry are looking at old photos to use at Marty's birthday party - we can see one in Sherry's hand that has noticeable brown marks down the back, as though it had been glued in an album. The next shot shows Marty passing this one to her, even though in the shot before it was in her hand. When Sherry passes the picture over to Niles and Frasier, in the shot when they get it, it's not the same photo, as it is clean on the back.
Visible crew/equipment: When Frasier and Daphne are sitting talking in the sitting room, Frasier stands and the camera angle shows the fake wall above the fireplace - you can see the flue and that the wall stops just over where the shot normally finishes. There is visibly no proper wall behind the fireplace, you can see clear through to the construction behind.
Continuity mistake: Daphne is standing in the center of the room during the party, at the buffet, talking to Frasier. In one shot her hands are moving toward the serving dishes but in the next, she is rubbing her hands together.
Revealing mistake: At the end of the episode when Frasier reveals to everyone that Roz is the one who's pregnant, we see Peri Gilpin step into the shot at the top of the stairs too early. She steps back behind the wall and then walks back out again a second later to say her line.
Continuity mistake: While talking to Niles at the party, Daphne's eyes are tearing because of an allergy. In one shot we see her put a tissue to her right eye, but the next shot shows her dabbing it to her left eye.
The Kid (2) - S5-E4
Continuity mistake: During the scene where Frasier and Roz are talking at her apartment, the mug that had been sitting on a tray moves off the tray and is sitting right on the table.
The Kid (2) - S5-E4
Continuity mistake: Early on in the show Roz and Frasier are in her booth talking, and she is holding a file folder. The next shot from another angle shows her holding a clipboard and then the shot switches back and she is holding the folder again.
The Kid (2) - S5-E4
Continuity mistake: When Rick leaves Roz's apartment, he has the sonogram photo in his left hand when he hugs her goodbye. When her lets her go and opens the door, the sonogram is in his right hand, even though he never switched it.
The Kid (2) - S5-E4
Continuity mistake: When Niles and Daphne are talking at Frasier's door, Daphne says "Now poor Roz really is in that predicament" and her arms are in front of her with her hands clasped. Niles says, "Do I smell chicken?" and immediately her arms are crossed, without enough time for her to change position.
The Kid (2) - S5-E4
Continuity mistake: Roz and Frasier are in her apartment, talking. Roz is leaning back on her arm, sitting on her bed. In the next shot her hands are in front of her. The items on the bed behind her have also changed positions.
The Kid (2) - S5-E4
Continuity mistake: After Rick has left Roz's apartment, she goes into the kitchen with the roses and just as she gets there Frasier knocks on the door. Within a couple of seconds she comes back with the roses in a vase, but she just didn't have enough time to do this in "real time".
The Kid (2) - S5-E4
Continuity mistake: Roz and Frasier are in his kitchen talking and Roz has a bottle of water. In one shot we see the bottle cap on the counter, but in the next shot it has disappeared.
Continuity mistake: Near the beginning of the show, Frasier brings Roz a muffin in a bag which she places to the left of her phone (her left). During the scene, the bag shifts from being near the console to being back to left of the phone. At one point Frasier and Roz leave the booth, then come back in, and it has moved in the meantime.
Continuity mistake: Near the start of the show Marty brings two green mugs over to Daphne at Cafe Nervosa, gives her one and keeps one for himself. We see his hand on the mug but in the next shot the same hand is on his knee.
Answer: In the last episode, they explained that Tossed Salad and Scrambled Eggs is a metaphor for the mixed-up people to whom Frasier dispenses his radio psychiatric advice.