Miracle on Third or Fourth Street - S1-E12
Continuity mistake: When Roz and Frasier are exchanging gifts, Roz takes her present out of its box and the box is still at least half covered in wrapping paper. In the next shot, no wrapping paper is visible around the box.
Miracle on Third or Fourth Street - S1-E12
Continuity mistake: When Roz and Frasier are exchanging gifts, when Frasier first puts the lid back on the gift box there is no tissue paper sticking out. In the next shot, a large sheet of red tissue paper is outside the box.
Miracle on Third or Fourth Street - S1-E12
Continuity mistake: When Bulldog is trying to persuade Frasier to cover his shift on Christmas Day, Bulldog's cup of eggnog jumps back and forth from sitting on the desk to in his hand.
Miracle on Third or Fourth Street - S1-E12
Continuity mistake: Early in the show Frasier is wrapping a Xmas present for Roz. The shot cuts to Chopper Dave and then back to Frasier. A bow and gift tag have appeared on the gift, but there wasn't enough time for that to have happened naturally.
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.