Continuity mistake: Tom is sitting on Frasier's couch and has one hand on the arm of the couch and one on his knee. In the next shot he has both hands in front of him. (00:12:15)
Continuity mistake: Near the beginning of the show, Daphne is having a smoke, and Frasier takes it from her - her hand is on her knee but when the shot changes it is in her lap.
Continuity mistake: Niles goes to Frasier's apartment and meets Tom, the new station manager. Niles is talking to him with his hands clasped in front of him but in the next shot his hand are clasped behind his back.
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.