Continuity mistake: When Marty is being interviewed at the Antiques Road Show, the expert's clipboard changes from being flat against his body to perpendicular to it - with no time for a natural shift in position.
Continuity mistake: During the opening credits, Roz is in Cafe Nervosa with a laptop. Next to it are 3 or 3 crumpled pieces of paper or Kleenex. A couple of shots later the pile shrinks to maybe one piece - without Roz or anyone else touching them.
Continuity mistake: Frasier goes into the kitchen to get Niles some water; he gets an empty glass goblet, then opens the fridge and takes out a bottle of water and then it cuts to the glass sitting on the counter already full of water.
Continuity mistake: When Ann says "Is that all bunny is going to eat," you can see a small piece of red food on Frasier's fork. When the shot changes and Frasier says "Bunny had a big Mexican lunch," the piece of food has gone.
Continuity mistake: Lilith takes on the job of pouring wine for Thanksgiving dinner - we see her pour 2 glasses but when the shot changes there are 3 full glasses of wine on the table even though there had been none before she started.
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.
Continuity mistake: Marty's shoebox is sitting on the table. Niles walks by and Daphne throws him a banana from the kitchen - the camera shows the box again, and it has turned about 45 degrees.
Continuity mistake: When Lilith says Frasier can't make it for lunch, Niles grabs the back of his dad's chair with his left hand. The next shot shows his hand down by his side, without enough time for the shift.
Continuity mistake: During the opening credits, Bebe and Roz are in Cafe Nervosa and Bebe is explaining a radio idea she has. As she says "all of Seattle will share", Roz is picking at her muffin, but in the next shot Roz has her hands on her stomach.
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: Niles puts the cap of the solvent can on the coffee table but a couple of shots later it has moved about 8 inches away, even though he didn't touch it. (00:04:10)
Continuity mistake: Niles leaves the kitchen with a small tray of devilled eggs to serve his guests - as the shot changes to him coming into the dining area, he is carrying a different tray, with different appetizers on it, including some grapes. (00:08:35)
You Can Never Go Home Again - S3-E24
Continuity mistake: Daphne is on the phone with her mother and has a dust rag in her hand. She holds out the phone towards Frasier and when the shot goes back to her, the rag is all bunched up in her hand - it has been loose before. There was no time for her to change it.
Docu.Drama - S8-E16
Continuity mistake: Frasier is holding a paper with his story on it as he is talking to John Glenn in the conference room. The shot changes as Glenn says, "I don't want to go behind someone's back", and Frasier's hands are now clasped in front of him.
Continuity mistake: At the beginning of the show, Frasier and Niles are in Cafe Nervosa and Roz comes in, with lots of Christmas gifts. She manages to unload them, take off her coat and get into a chair between the guys - all in a couple of seconds. It all happens too quickly for "real time".
Continuity mistake: Frasier's in the toy store and another customer comes in with a carrier bag of educational toys he bought elsewhere. As Frasier tries to talk him into selling him the toys, some shots show just the bag with the toys in it and other shots show a roll of green wrapping paper visible about 6 inches above the bag.
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.
And the Whimper is... - S1-E18
Continuity mistake: Early in the show, at Cafe Nervosa, Roz comes in and Bebe asks her to get her some coffee. Roz returns with a paper bag which she puts down on Bebe's right. In the next shot Bebe stands up with it in her left hand, but there was not enough time for it to change from the right to the left naturally.
Continuity mistake: During the part of the show where they are getting ready to play Murder we can see empty punch glasses on the table - in another shot we see three even though no one went near them. This changes back to 2 after the lights come on - unlikely anyone helped themselves to punch when the lights were out.
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.