Fool Me Once, Shame on You, Fool Me Twice... - S2-E14
Continuity mistake: When Daphne is telling her story about living in London, the towel on top of the laundry basket changes from being red to being blue, without her rearranging it. (00:06:15)
Flour Child - S2-E4
Continuity mistake: Near the beginning of the show, Roz takes a large get well card into Frasier's booth - she has some papers as well, which are on top of the card. She lowers the card and the next shot shows the papers are under the card, with no time for changes in position.
Continuity mistake: During the scene where Martin is apologizing to Artie in the hospital room, the photo of Artie's wife on the bedside table changes position about 45 degrees while they talk.
Agents in America, Part III - S2-E22
Continuity mistake: Roz is at Frazier's talking about a possible replacement for him at KACL. As she says "you should she her nails", her arms are crossed over her chest but in the very next shot, they are down by her sides, with no time for the change.
Continuity mistake: After Frasier is left alone in the apartment, we can see a glass of sherry and a can of beer on the coffee table, but neither item was on the table when he was talking to the others before they left the apartment. Roz's purse also shifted from the couch to the little glass table during the shot change. (00:21:20)
Continuity mistake: Niles goes to Frasier's apartment and meets Tom, the new station manager. Niles is talking to him with his hands clasped in front of him but in the next shot his hand are clasped behind his back.
Agents in America, Part III - S2-E22
Continuity mistake: As Bebe says, "Darling, what you have is a fever" to Frasier, her hands are on the table in front of her. He says "what?" and the shot shows her elbows on the table and her hands are in the air, with no time for natural change.
Continuity mistake: There is a bag of chips on Marty's little table that goes from being open but almost flat to being open much wider and the bag is very rounded, from one shot to another, but no one touches it. (00:18:05)
You Scratch My Book... - S2-E15
Continuity mistake: While Niles is filling out raffle tickets on the coffee table, sometimes the envelope is on his left and sometimes almost completely out of sight on his right, although he never moves it around.
Slow Tango in South Seattle - S2-E1
Other mistake: When Frasier is complaining that he is not mentioned in the acknowledgments of the novel, he picks up the book and then slams it down on the desk. It sits face up, near the front of the desk. In the next shot of the desk, we see that the book is face down and has moved back.
Continuity mistake: Martin is drinking a glass of milk which is between his arm and a bowl of chips. Suddenly the milk is sitting well to the left, even though he didn't touch it. (00:14:35)
Duke's, We Hardly Knew You - S2-E5
Continuity mistake: About two thirds of the way through the show, Marty and Frasier are talking in the living room. Marty is sitting in his chair with a glass of milk. One shot shows him with both hands on his milk, and then he puts his left hand on the arm of the chair. In the next shot his hands are around his glass of milk again.
Continuity mistake: The waitress brings Frasier his coffee just as Niles begins to say "Anyway," and she is back behind the counter as he finishes the word. There just wouldn't be enough time in real life to do this. (00:03:55)
Agents in America, Part III - S2-E22
Continuity mistake: At the beginning of the show, Niles and Frasier are in Cafe Nervosa. As Niles says "Matthew Pimm tried to stage a coup", we can see Frasier's hand on his napkin next to his mug. As the shot changes, suddenly both of Frasier's hands are on his mug.
Continuity mistake: As Frasier is leaving Roz's apartment, we can see her crutches behind her, leaning together and upright against the wall. In the next shot one has noticeably changed position but they go back to their original state a couple of shots later. (00:04:35)
Continuity mistake: Niles has the "hot buns" pads under his right arm and his mittens in his right hand. The next shot shows he already has a mitten on his left hand even though there was not enough time for him to put it on. (00:10:25)
Continuity mistake: After Frasier passes the pink box with the birthday cake over to Daphne the box is closed. But when the doorbell rings the lid is about halfway open, with no time for this change. (00:04:15)
Continuity mistake: During the scene where Niles tells the chef to serve the souffle in a large bowl, there is a large bowl of food next to him with no utensil in it. When Niles says "Table Twelve is still waiting for their entree", there is suddenly a utensil sticking up in the center of the bowl.
Audio problem: Frasier is talking to Elliot on the phone and there is a shot of Roz. In the shot of Roz, Frasier says "You know, Elliot..." and his reflection is visible in the window. But his lips on the window reflection don't move until after he says "You know, Elliot..." (00:00:30)
Flour Child - S2-E4
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.
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.