Perspectives on Christmas - S5-E9
Continuity mistake: Daphne gives Marty a brightly coloured sweater for Christmas and after he opens it, he puts it back in the box - the yellow sleeve is hanging out. After he says "all that makeup on my face", the sweater has changed position and there is a red portion hanging out of the box. No one touched it in the meantime.
Perspectives on Christmas - S5-E9
Continuity mistake: In the cafe, Roz says ".....because I've gotten so fat," and you see her lift her coffee cup to her face. In the next shot (largely of Frasier) you can just see the edge of the cup as she lifts it up again.
Perspectives on Christmas - S5-E9
Continuity mistake: Daphne puts a couple of Christmas bags on Marty's chair; the one facing the camera has a Santa on it and behind that are pieces of pink paper sticking up about 6 inches. The pink paper is sometimes visible, and sometimes isn't, as the scene progresses, from the same angle.
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.