Continuity mistake: When Roz opens her gift of a bracelet from Frasier, he puts it on her and she feels guilty, so she goes to call Luke - but as she leaves the table, there is suddenly no sign of the box the bracelet came in.
Continuity mistake: Marty gives Niles a mug which says "World's Greatest Psychiatrist." He puts it down on the coffee table with the lettering facing the camera. He then leaves with Daphne and a few shots later, we can see the mug again, but it is turned around and we see the blank side. When Frasier leaves the apartment, it's back in its original position. Nobody ever touched it.
Continuity mistake: While Frasier is singing on-stage to Monica, a shot shows Roz from the back, and her left hand is on the table - but in the next shot her hand is stretched out holding her date's hand.
Continuity mistake: When Niles, Roz, Marty, and Daphne are in the living room confessing something shameful, Martin says, "Every time I watch 'The Sound of Music,' I cry." As the shot changes, we see that his hand goes from his arm rest to his lap and his beer can goes from being on one side of the remote to the other.
Continuity mistake: Throughout the Christmas parade we can see that the headphone/microphone is on the left side of Frasier's head. During the first break just after one of the crew members is telling Mary that her improv is really good he tells Frasier to lighten up. Just after he says this you can see that the headphone/microphone is now on the right side of Frasier.
Legal Tender Love and Care - S8-E6
Continuity mistake: When Frasier is carrying Abbie's coat to his door, he is holding it about 10 inches below the shoulders, but as the camera changes to him coming through the door, he is holding it about 6 inches higher, with no time to shift position.
Continuity mistake: While Marty is sitting with Eddie on his lap and talking to Niles, the dog's blue kennel tag goes from above Marty's hand to under Eddie's chin from one shot to the next.
Continuity mistake: In the show from Series 7, "Big Crane on Campus", the Jean Smart character is introduced as Lorna Lenley - ex-prom queen from his high school with a volatile personality who has a brief relationship with Frasier. In Episode 21, series 8, she comes back as the same character - ex-prom queen, had a fling with Frasier, etc. - but now her name is Lana. She was billed as Lorna in the series 7 show and as Lana in the series 8 show. The names may be similar but are definitely different names.
Forgotten But Not Gone - S8-E18
Continuity mistake: While Marty and Frasier are eating Fredericka's cooking, Frasier puts his knife down on his right, then switches his fork to his right hand. After he says "motion carried," the shot shows his fork back in his left hand.
Continuity mistake: Kelly comes over to Frasier's to read a mock script for the Xmas parade Frasier wants to co-host. She puts her purse next to her on the couch but never opens it. Suddenly reading glasses appear next to the purse, which Kelly subsequently puts on to read.
Plot hole: When Frasier is trying to get to the bottom of Niles' problem viewing Daphne in a real way, we see them both against past scenes in the show; Frasier watches and comments on some of them as he talks but because he is actually only discussing these events with Niles, he shouldn't be able to see a visual of anything such as the dress Daphne is wearing during the dance scene.
Legal Tender Love and Care - S8-E6
Other mistake: About 2/3s of the way through the episode, Daphne and her ex-boyfriend are at the courthouse where he is getting married. There is a board in the background with the names of the judges listed on it. The bottom judge's name has the "u" missing in the title Judge.
Other mistake: In the scene where Frasier is in line for tickets for Roz he is talking to Lana on the phone and asks if he can move Kirby's tutoring up "tomorrow" to four right after school because he made plans with Claire later that night. You can see on the sign next to him that the tickets go on sale Saturday morning and Roz had previously said in the beginning of the episode that she wanted to start standing in line Friday so she would be first in line Saturday morning. So it is obvious that Frasier is in line Friday night which would mean tomorrow would be Saturday, which means Kirby being in high school would not have school the next day (Saturday) like Frasier said. (00:21:05)
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.