Continuity mistake: In one of the sequences where Niles and Shenkman are running in and out of the bedroom, Shenkman sprays perfume around the bed. The roses that were on the pillow have now completely disappeared and never reappear although neither Niles nor Shenkman touched them.
Continuity mistake: When Niles leaves the bedroom where he thinks he will meet Maris, her lover Shenkman comes in and notices the two roses crossed on the pillow. Once he crosses over to the bed, though, the roses have noticeably changed position.
Continuity mistake: Near the beginning of the show, Frasier gets a cup and saucer for Niles and pours him just a tiny bit of tea. But when we see the cup again, it's about 3/4 full.
Continuity mistake: While Frasier is on the phone to Mrs. Crawley, the shot goes to Daphne on the courch a couple of times, and the book and decorative item on the coffee table change position from shot to shot.
Continuity mistake: While Niles is confronting Dr. Shenkman we can see a rose petal on the smooth bedspread behind them. Another shot shows the petal is gone and the bedcover is dishevelled.
Continuity mistake: At the very end of the show, when Frasier, Niles and Martin are on the balcony, all three have their hands and arms folded in front of them, leaning on the railing. The shot then goes to behind them, and Frasier is standing with his arms straight out, and only his hands on the railing.
Continuity mistake: At the end of the show Frasier, Niles and their dad are having drinks and Niles goes to top off Marty's shot glass - but just as he pours the drink, Martin pulls it away. In real life the drink would have ended up on the floor, but the scene continues as Niles keeps pouring into the glass.
Continuity mistake: Frasier is serving tea to Niles in the first scene and sometimes the tray is sitting straight on the corner and sometimes it is askew. The teapot changes position on the tray as well.
Continuity mistake: When Frasier, Marty, and Niles are having drinks at the end of the show, Frasier says "I think we have a 3-way tie" and we see Marty holding his drink in his left hand - the shot then switches and it's suddenly in his right hand, with no time for a natural change.
Continuity mistake: When Niles is in his office telling Frasier about Shenkman and Maris, a crumpled tissue moves around to different spots on the desk from shot to shot, although no one touches it.
Continuity mistake: Near the end of the show, when Frasier and Niles are having drinks, in a close shot of Frasier we see Niles' hand and drink come up to chin level but in the next shot his hand is still at waist level.
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.