Three Dates and a Breakup (2) - S4-E20
Continuity mistake: While Marty and Frasier are fighting Marty smashes some plates. The shot changes to the living room with Frasier apologizing and then switches back again. However, now all the smashed crockery has disappeared to be replaced by what looks to be a bowl and a tumbler.
Three Dates and a Breakup (1) - S4-E19
Continuity mistake: Daphne has the bag of groceries on the floor between the coffee table and the couch - when Stephanie leaves the apartment the loaf of bread is sticking out on the left side but when Marty comes into the living room, the bread is now on the other side of the bag and leaning to the right.
Continuity mistake: When Frasier and Marty are sitting at the breakfast table, talking about the weather, Frasier's newspaper is sometimes folded over and sometimes not, although he never changes it from shot to shot.
Dad Loves Sherry, the Boys Just Whine - S4-E9
Continuity mistake: When Sherry tells the boys she's a sleepwalker, she has her bag slung over her right shoulder. In the next shot, without time for change, she is holding the bag in her left hand.
Continuity mistake: Just after Daphne and Marty leave Frasier's booth, Roz picks up the clipboard from the console to Frasier's right and puts it out of sight; when the doctor comes into the booth the clipboard is suddenly on the console again.
Three Dates and a Breakup (1) - S4-E19
Continuity mistake: Sherry is about to tell Frasier and his date a joke - Marty and she have their arms around each other - the first shot shows her large orange purse is over her shoulder (between them) and behind her but the next shot shows it still between them, but in front of her - simply impossible to have changed its position so quickly.
Three Dates and a Breakup (1) - S4-E19
Continuity mistake: During Frasier's party, he is talking to Kimberly by his credenza. At the end of the scene, a wine glass appears there - it hadn't been there earlier. The glass Kimberly put down was a champagne glass.
Continuity mistake: Marty, Daphne, and Sherry are all shouting at each other around the dining room table - there are two chairs between Martin and Daphne but when the shot changes to Frasier coming in, now Marty and Daphne have no chairs between them.
Continuity mistake: While Daphne and Sherry are arguing, Marty says, "See, I'm regretting that one already", and his rolled up exercise mat, sitting on the table, rotates about 45 degrees.
Three Dates and a Breakup (2) - S4-E20
Continuity mistake: As Frasier pushes Sherry towards the balcony, we can see a gold decorative thing on her green purse. In previous shots to this, the gold piece didn't show, because the other side of her purse was facing out. At no time did she turn the purse around.
To Kill a Talking Bird - S4-E14
Continuity mistake: At the beginning of the show the spoon in the custard dish on Martin's table shifts from side to the other from shot to shot.
Continuity mistake: Daphne and Martin are at KACL with Roz and Frasier, talking about flu shots. Then Marty starts talking about McGinty's and suddenly there is a clipboard on the console that wasn't there before, and wasn't put there during their conversation.
Roz's Turn - S4-E17
Continuity mistake: In the same scene where Bebe's hands change position from shot to shot, and Frasier is warning Roz about Bebe having no reflection, Frasier's hands on Roz's arms change as well. In some shots his hands are on her upper arms, in others they are on her lower arms.
Three Dates and a Breakup (2) - S4-E20
Continuity mistake: Niles and Frasier have drugged the rottweilers with some of Maris' pills and Frasier points towards the french doors and says, "The dogs are getting drowsy." We see the dogs dropping to the ground. The next shot of the doors, a couple of seconds later, shows no sign of the dogs, although they were visible from that angle just before that.
Continuity mistake: Frederick appears in the kitchen to talk to his parents, who are ignoring him. In one shot he is covered with spots and in the next, he only has about half as many. He is supposed to have hives, which I know can appear and disappear quickly, but these look nothing like hives in the first place.
Continuity mistake: When Clive arrives at the apartment, he puts his coat over the front of the arm of the couch. As the scene progresses and Marty tells him about being an astronaut, the coat is suddenly on the back of the arm of the couch, even though no one moved it.
Three Dates and a Breakup (1) - S4-E19
Continuity mistake: After Roz says to John, "I hardly recognized you with that mustache", one hand is up by her chest and the other is on her knee, but when the shot changes, both hands are clasped together.
To Kill a Talking Bird - S4-E14
Continuity mistake: Niles has his dog over at Frasier's. He sits down on the couch and the dog is facing the door. The next shows the dog standing about two feet away and facing the balcony - and the third shot shows her back in the first position. There was no time for her to change positions naturally.
Continuity mistake: During the bathroom scene where Frasier is in the bath talking to everyone, the bubbles on his face and shoulders change in position and amount from shot to shot.
Odd Man Out - S4-E24
Continuity mistake: Near the start of the show, when Frasier is checking for phone messages, his raincoat hanging up in the background sometimes has a bunched up sleeve and sometimes doesn't.
Answer: It equals the record of James Arness of "Gunsmoke" for the actor who's played the same part on TV NOT in a soap opera. If you include soaps there are two main contenders - William Roache, who's been playing Ken Barlow in "Coronation Street" in the UK since 1960. Don Hastings has been playing Robert Hughes in US soap "As the World Turns" since 1960 as well.