Continuity mistake: While Frasier, Niles, Martin, and Roz are in Cafe Nervosa, and as Clint comes in, the extra in the background is reading a newspaper, which goes from opened to closed to opened from shot to shot, with no time for her to change it.
Continuity mistake: As Roz is introduced to Clint, there is nothing on the console where Frasier is standing. But as the scene progresses, a clipboard suddenly appears there, without human assistance.
Continuity mistake: Clint, Frasier, and Roz are in Cafe Nervosa and Clint is holding is coffee cup and speaking French. In the next shot the coffee is on the table and his hands are on his knee.
Continuity mistake: As Frasier tells Bulldog that he shouldn't feel threatened by Clint, we can see the edge of a clipboard moving on the bottom right screen, where Roz would be. However, in the shot before that, Roz had pretended to punch Bulldog - she had nothing in her hand and wouldn't have had time to pick anything up.
Answer: Nanny G (Nanette Guzman - played by Laurie Metcaf) has been a children's entertainer for twenty years, and tells Frasier, "Do you know what it's like to play the same character for 20 years?!" The joke is that Kelsey Grammer has been playing Frasier Crane since 1984, when the character first appeared on "Cheers", so Kelsey in real life has been doing just that!
Super Grover ★