Flour Child - S2-E4
Continuity mistake: Marty is patting Niles on the shoulder, comforting him over the destroyed Flour Child. The next shot shows him patting him on the back near his collar, with no time for the change in position. (00:18:00)
Flour Child - S2-E4
Continuity mistake: Frasier and Daphne are forging signatures on the get well card. In one shot they both have their pens quite a distance from the card but in the next shot they are both writing, without enough time for the change. (00:16:35)
Flour Child - S2-E4
Continuity mistake: Niles is holding baby Nathan in the hospital and Arleen takes him back because he's crying - suddenly the blanket is up around his head even though it was hanging loose before. (00:21:45)
Flour Child - S2-E4
Continuity mistake: When Frasier and Daphne are copying the names into the new get well card, we see Daphne using a pen with an orange lid. She puts the lid on the pen and sets it down. In the very next shot she is writing with the same pen.
Flour Child - S2-E4
Continuity mistake: Arleen the cab driver is in labour. She pushes her hair back with her hand in one shot, but in the next it is back on the steering wheel, without enough time for this to happen in real time. (00:05:50)
Flour Child - S2-E4
Continuity mistake: Near the beginning of the show, Roz takes a large get well card into Frasier's booth - she has some papers as well, which are on top of the card. She lowers the card and the next shot shows the papers are under the card, with no time for changes in position.
Flour Child - S2-E4
Continuity mistake: Daphne asks Frasier about his son's birth and he says that he held Frederick for the first time while Lilith was screaming at him that he would never be allowed to touch her again. But in Cheers, in the episode "The Stork Brings A Crane", we learn that A) Frasier was not present when Frederick was born and B) When he finally got to see his son for the first time, Lilith was not angry with him.
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.