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.
Continuity mistake: Frasier has a college catalogue that he takes over to the phone to call for information. Between the time he puts the catalogue next to the phone to the time he makes his call, the page changes, even though he doesn't touch it.
Continuity mistake: Roz takes the puppy from Marty and puts her hands around its hindquarters, but in the next shot her hands are up around its front legs. There was no time for any change of position.
Continuity mistake: In class, Frasier passes a note to Niles who folds it in half. The teacher grabs it away from Niles, and unfolds it himself - but it is now folded in four, not in two.
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.