Continuity mistake: At the start, when they are discussing the show you can see that Martin is holding his coffee mug, but when it cuts and he says "It's your 1000th show," his hand is suddenly near his lap.
No Sex Please, We're Skittish - S11-E1
Continuity mistake: In the first episode of season 11, "No Sex Please, We're Skittish", Frasier and Roz both say it's been two years since they slept together when it's actually just one.
Continuity mistake: As Catherine is about to leave Frasier's apartment near the end of the episode, you can see the white shirt she is wearing constantly changes between shots. At times it is hanging out very loosely and in other shots it is neatly tucked in and positioned to the right.
You Can't Tell a Crook by His Cover - S1-E15
Continuity mistake: When Linda opens her beer, her three piles of poker chips are arranged in a triangle. In the next shot, they are laid out in a line, but she has not moved them.
The Good Son - S1-E1
Continuity mistake: When Daphne first arrives at the apartment and is complimenting Martin's chair, his plate moves around on the side table between shots.
Continuity mistake: Niles stumbles catching the banana and knocks the shoebox off the table and it lands on the floor. The next shot shows a long dark item lying on the carpet - it wasn't there before and didn't come off the box.
Merry Christmas, Mrs. Moskowitz - S6-E10
Continuity mistake: The same mistake happens throughout this scene - Helen has her purse on her arm and then on her shoulder and then back to her arm from shot to shot.
The Show Where Woody Shows Up - S6-E13
Revealing mistake: Frasier and Woody look at the Seattle tourism book, and in particular a photo of the city. However, you can see there may be some text on the page, but there certainly isn't a photo.
Continuity mistake: When Niles brings out the "Hot-Buns," he hands it to Martin who instantly in the next shot, is pulling it out from under him when Daphne comes in. There really wasn't time for him to put it under himself first.
Plot hole: In this show Daphne's former fiance, Clive, shows up. They had been engaged for several years in England. However, in Series 1, episode 11 (Death Becomes Him), Daphne talks about never having had a serious boyfriend, and goes into some detail about how people tried to set her up with eligible men. As Daphne is open about everything else, there seems to be no logical reason for her to not mention she'd been engaged.
Continuity mistake: Just after Niles knocks the box on the floor, we can plainly see it through the legs of the chair. When Marty goes to pick it up, it is now out of our range, even though the camera angle remains the same.
Selling Out - S1-E9
Continuity mistake: Frasier meets Bebe for the first time in the hall at KACL. She has her business card in her hand for part of the scene but after Frasier tells her he has a son, the card disappears - with no time for Bebe to have put it back in her purse.
Where There's Smoke There's Fired - S3-E21
Continuity mistake: Bebe has just inhaled smoke from her purse and Frasier grabs it and puts it on his bookcase. In the shot before, there had been billows of smoke around them, but suddenly the air is clear and there is no smoke.
Continuity mistake: In the restaurant, Frasier and Ann are at Kenny's table - Kenny puts his napkin down and leaves the table, while Frasier puts his cellphone away. In the next shot, the napkin has changed position on the table and Frasier is putting his cellphone away again.
Continuity mistake: When Frasier and Roz are in the cafe talking about the See Bees, Roz says something like "Those shows are torture." When she does there are many different shots in a short space of time and if you're quick you can see the coffee mug suddenly jump into her hand without picking it up.
Fool Me Once, Shame on You, Fool Me Twice... - S2-E14
Continuity mistake: Frasier meets Heather in the bar. She is reading a book which she has propped open on the bar, but as they talk, she takes it off the bar and closes it in her lap. A couple of shots later we see book is back on the bar and she is closing it again. (00:16:25)
Continuity mistake: Marty is leaving for the game and Frasier's butler hands him a paper bag with a sandwich in it. Marty carries it in his left hand, but by the time he gets to the door, the bag is folded up much smaller and looks much more crinkled.
Something Borrowed, Someone Blue (1) - S7-E23
Continuity mistake: Frasier is just saying goodbye to Niles and we can see the brochure for Daphne's reception to the left of his sherry glass. When he stands up and shouts "Daphne!" the brochure has moved about 6 inches to the right, even though no one touched it.
When a Man Loves Two Women - S6-E21
Continuity mistake: Before Frasier says "Enough, Dad!", we can see a spoon in Marty's cereal bowl. In the next shot it's gone. (00:10:15)
When a Man Loves Two Women - S6-E21
Continuity mistake: During the scene where Niles is flipping a coin, the newspaper on Marty's lap is sometimes opened flat and sometimes folded over, even though he doesn't touch it. (00:09:50)
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.