Continuity mistake: At the start of the show, Frasier is standing at the counter of Cafe Nervosa counting out bills. The next shot shows him reaching into his back pocket, without enough time for this to happen naturally.
Continuity mistake: When Marty bangs open the crane's cage, he is about a foot away from where he had been in the previous shot, when the crane pecked him on the rear end. To achieve the latter he had to be fairly close to the bird, but to accidentally open the cage easily by pushing at it with his cane, he had to be standing farther away, or it wouldn't have worked. He moves that distance from shot to shot and it just wouldn't have happened in real time.
Continuity mistake: During the opening credits, Bebe and Roz are in Cafe Nervosa and Bebe is explaining a radio idea she has. As she says "all of Seattle will share", Roz is picking at her muffin, but in the next shot Roz has her hands on her stomach.
Continuity mistake: When Frasier is sitting on his couch, talking about his new agent, the white bag containing the video Niles brought over changes position on the table behind him.
Continuity mistake: When Frasier's new agent is at his apartment explaining how Frasier could take advantage of the crane incident, the remote on Marty's table rotates about 30 degrees, even though no one touches it.
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.