You Scratch My Book... - S2-E15
Continuity mistake: Honey puts both hands on Frasier's shoulders, but the next shot shows one around his shoulder and one around his back, with no time shift positions naturally. (00:18:55)
Fool Me Once, Shame on You, Fool Me Twice... - S2-E14
Continuity mistake: Daphne is visiting KACL and has Frasier's headset up to her ear and then down on the console in a split second, with not enough time to do this naturally. (00:13:45)
Continuity mistake: Martin opens the jewel case-like box twice in two different shots in the background. (00:09:55)
You Scratch My Book... - S2-E15
Continuity mistake: Honey walks over to Frasier, a glass of wine in one hand. Then suddenly she uses both hands to rub his shoulders. Supposedly she gave him the glass because it is all of a sudden in his hand now, but we never see him take it from her.
Fool Me Once, Shame on You, Fool Me Twice... - S2-E14
Continuity mistake: Daphne visits the radio station where Frasier works about halfway through the episode. She holds the earphone piece up to her right ear, then it cuts to a different camera angle and the headphones are lying on the desk with no time between shots. It's actually quite glaring.
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.