A Word to the Wiseguy - S3-E15
Audio problem: Around the time when Niles is talking about "wealthy white women," there is a shot when his mouth is moving but there is no sound coming out. It then suddenly changes to a shot when you can hear what he is saying. (00:02:15)
A Word to the Wiseguy - S3-E15
Continuity mistake: The guy Niles and Frasier meet at the Cafe puts his coffee cup down twice between shots, after he has made the phone call and before he leaves. (00:09:20)
A Word to the Wiseguy - S3-E15
Continuity mistake: While Niles is talking to Martin about Maris's traffic tickets, the coffee pot goes from one side of the Lazy Susan to the other, with no one touching it.
A Word to the Wiseguy - S3-E15
Continuity mistake: Niles goes to KACL and walks into Frasier's booth - there is nothing on the console in front of Frasier - but then in a shot something shaped like a cellphone appears but in subsequent shots is gone again.
A Word to the Wiseguy - S3-E15
Continuity mistake: Frasier is on the phone at KACL with Jerome's girlfriend and the reflection in the glass shows him raising his hand to his face, but the next shot returns to him - his hand is on the console. There was no time for him to have shifted positions normally.
A Word to the Wiseguy - S3-E15
Continuity mistake: At the end of their meeting outside Cafe Nervosa, Jerome throws his red paper napkin on the table and they say their goodbyes. In the shot after he walks away there is no sign of the red napkin.
A Word to the Wiseguy - S3-E15
Character mistake: In the scene where Jerome Belasco turns up unannounced at Frasier's apartment, Daphne tells him she's psychic and guesses that he's an osteopath. After Jerome leaves, Daphne says she thought he seemed very nice. Frasier turns to her and says, "This from the psychic who said he was a chiropractor."
Continuity mistake: As Frasier is saying "too often we shrink from doing things we really want to do", the shot goes to Roz, and we can see the reflection in the glass shows that Frasier's mouth and hand movements do not match what he is saying.
Revealing mistake: Near the end, in Cafe Nervosa, the guy that wants to sue Frasier gives Niles a push. Niles stumbles backwards, knocking over some chairs and the coat rack before falling down, taking the table by the window with him. If you look closely just before he hits the table, the woman sitting there (rather than moving out of the way), very subtly pulls on the table, so as to upend it so Niles can go down with it.
Chess Pains - S3-E18
Other mistake: When Frasier sets off the fire alarm Daphne comes running from her bedroom at the end of the hall across from Martin's room and Frasier's room. That is incorrect and impossible since Daphne's Room is on the other end of the condo and separated by the balcony. Given the condo layout, it is impossible for Daphne's bedroom to have a door across from Frasier's bedroom.
Continuity mistake: Frasier is in Mr. Safford's study talking to him. As Frasier says "a little unconventional," his right hand goes up to his chin, gesturing. As Safford answers, Frasier's hands are grasped together in front of him, with no time for natural change.
Continuity mistake: Frasier is arguing with Niles in the kitchen and removes a large bottle of water from the fridge. He takes off the cap, and pours water into a glass. Immediately the shot shows the bottle capped again while Frasier and Niles continue talking.
Continuity mistake: Early in the show, Frasier is at home - the rest of the gang have surprised him with a birthday cake. In one shot the candles are burning on the cake, in the next Frasier is cutting the cake and the candles have disappeared, with no time allowed to remove them.
Continuity mistake: Fairly early in the show Frasier has his dad call the police station to ask about a female officer Frasier is interested in. Marty asks for her name, hangs up, and gives Frasier a lot of information about Maureen that he couldn't have possibly learned in that short a time.
Where There's Smoke There's Fired - S3-E21
Continuity mistake: When everyone is sitting at the table having dinner, the amount of food on Bebe's plate changes repeatedly. She adds extra food twice, once from the pot and once from Martin's plate, but the difference in portion sizes changes more times than that and without time for it to be eaten. (00:11:05)
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.
Where There's Smoke There's Fired - S3-E21
Continuity mistake: When Frasier, Bebe, and the rest of the gang are having dinner at Frasier's he folds up his table napkin and says "he's on his third pacemaker", and we see him fold up his napkin again.
Revealing mistake: Frasier, Roz and Ben are sitting at a table in Cafe Nervosa. However, as the camera is panning out when Ben sits down you can see the outside of Cafe Nervosa because the wall is only a small partition. The camera zoomed out too far. (00:06:30)
Deliberate mistake: About halfway through the show, Roz and Daphne are in the kitchen talking. Daphne pours water into the teapot - but there is no steam coming from the kettle, nor any sound of a boiling/just boiled kettle. No self-respecting Brit would make tea with water that wasn't boiling.
Continuity mistake: Niles is filming is father in his recliner, trying to record his life story for posterity. Marty fakes a heart attack or death - and lies back in his chair with his left arm by his side. In the next shot his arm is crooked up around his head, but with no time for him to have moved it.
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.