How to Bury a Millionaire - S6-E7
Continuity mistake: In the scene where Martin is trying to find some aspirin and appears on the living room mezzanine, John Mahoney is wearing glasses (Martin wasn't wearing glasses at this point). In the next close-up shot the glasses have disappeared. (00:04:40)
Continuity mistake: In this scene, Martin and Daphne are arguing about Martin buying the gift basket for Daphne because Daphne knitted the sweater for Martin. Daphne says the basket cost too much, so Martin begins to take items from the basket and put them on the table. Then as the argument progresses Martin and Daphne decide to take back their gifts. Martin places the gift basket on his chair (the two items that were taken from the basket are still on the table) and Daphne takes the sweater. A minute later they make up and agree to re-exchange the gifts. Daphne gives Martin his sweater and when Martin reaches for the basket, all items are there, including the ones that were still sitting on the table when he put the basket on the chair.
The Friend - S3-E11
Continuity mistake: Frasier's new friend Bob pulls away from the table in Cafe Nervosa - his plaid hat is still on the chair next to him. In the next shot the hat is suddenly in Bob's lap, even though he couldn't possibly have put it there in that time.
Ain't Nobody's Business If I Do - S5-E11
Continuity mistake: Frasier, Niles, Martin, and Daphne are in the living room talking about people who have been married multiple times - in one shot Daphne is looking forward but in the next she is looking backwards at Frasier.
Continuity mistake: Martin is sitting on the coffee table hugging the puppy who is nuzzling his face. He says "No" to Roz and in the next shot the puppy is no longer near his face.
Whine Club - S7-E17
Continuity mistake: When the gang are at Frasier's apartment for a brunch to get to know Mel, Roz is having a Bloody Mary. In one shot she lifts her glass right to her lips, but in the next shot she is lifting it up to her lips again.
Morning Becomes Entertainment - S7-E19
Continuity mistake: On Frasier and Bebe's first show, the pink card with Frasier's notes moves back and forth, behind the bowl on the table, between shots.
The Ann Who Came to Dinner - S11-E13
Continuity mistake: In the doctors office, the doctor wheels Ann out and leaves the X-Ray he just put up of her leg. Later in the scene after Martin and Frasier have their conversation, Ann comes back into the room on crutches. When she does, the X-ray that was on the board has disappeared and never returns through the rest of the scene.
Continuity mistake: During the opening credits, Bulldog is on the phonein the hall at KACL and he throws a tennis ball at Frasier, who stumbles around trying to catch it. During the scene we see an extra behind Bulldog go into one of the rooms - but we see her do it again just a split second later - and the second time she has a paper under her arm, where she had nothing the first time.
Continuity mistake: During the scene when Marty and Daphne are in the car going to the shoe store, she stops at a red light, as does the black car on her left. During the shots that follow, the car on the left, although always black, is a different car in different shots.
Continuity mistake: During the show, Daphne and Martin are having breakfast while talking to Frasier. Daphne removes her blue napkin from her lap at one point,and puts it on the table; a short time later we see her remove it from her lap again.
The Last Time I Saw Maris - S3-E8
Continuity mistake: When Niles is drunk in Frasier's appartment, he puts a six-pack of beer cans on the table by Martin's chair. The pack has changed position on the table later on when Frasier is talking about empowerment, without anyone touching it. (00:09:15 - 00:10:35)
Three Faces of Frasier - S7-E21
Continuity mistake: During the opening credits, Frasier, Martin, and Daphne are sitting at the table talking about getting older. At one point Martin says "when people reach our stage in life" and his left hand is holding his coffee cup. But as the camera cuts to Frasier we can see Martin's hand in the left corner of the screen, up in the air, without the cup. The next shot shows it back on the table, holding the cup again. All this happens too quickly for the changes in real time.
Legal Tender Love and Care - S8-E6
Continuity mistake: During the closing credits, when Niles goes to Frasier's with some licorice, Marty is lying on the couch, sick. At first his cane handle is facing the fireplace, but when the shot changes, it has moved about 45 degrees towards the window. When he gets off the couch, the handle is facing the fireplace again.
Legal Tender Love and Care - S8-E6
Continuity mistake: Soon after Abbie has arrived at Frasier's, Daphne says to Niles, "It's cute when you do it," and he has his hand on her shoulder. In the next shot, his hands are in his lap and she is taking a sip from her glass, with no time for a natural change.
Continuity mistake: A fan next to Niles is holding his nachos container by its side as they talk. In the shot where he gets up to leave, his hand is under the container, with no time for this to have happened naturally.
Three Days of the Condo - S4-E11
Continuity mistake: Frasier and Daphne are talking about the condo board lady leaving pink slips for Marty. There is a pink slip on the credenza which moves several inches towards the couch without either of them moving it.
Continuity mistake: Just before Marty says "Quack" to Daphne, his hands are in his lap. The next shot shows them on the arms of his chair. (00:05:40)
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.