Continuity mistake: When Frazier comes into his booth to begin his show, Roz is reading a book. She says "Happy Birthday" to him and we can still see the book in front of her; but in the next shot it is lying on the console next to her, without any time for her to have put it there.
Frasier (1993)
3 continuity mistakes in Back Talk - chronological order
Starring: Kelsey Grammer, David Hyde Pierce, John Mahoney, Jane Leeves, Peri Gilpin
Visible crew/equipment: When Frasier is standing through his sunroof to speak with the drivers stuck behind him in the parking garage, one shot shows Frasier's body and much of the rear window which features a very clear reflection of the boom mic.
Frasier: And though washing one's hands twenty to thirty times a day would be considered obsessive/compulsive, please bear in mind that your husband is a coroner. Thank you for your call, Jeanine. Roz, whom do we have next?
Trivia: When Nanette tells Frasier she's tired of playing her children's show character, she asks him if he knows what it's like to play the same character for twenty years. By this point, Kelsey Grammer had been playing Frasier for twenty years: eleven on 'Frasier' and nine on 'Cheers'.
Question: Counting his role on Cheers, Kesley Grammar has played Fraiser for twenty years. Is this the record for the longest portrayal of a character by a TV actor?
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.