Question: Frasier lets his neighbor's cat stay with him. But in the episode "It's Hard to Say Goodbye If You Won't Leave", he was allergic to cats and could not be near Kate's cat.
Frasier (1993)
1 question in season 11
Starring: Kelsey Grammer, David Hyde Pierce, John Mahoney, Jane Leeves, Peri Gilpin
Sleeping with the Enemy - S3-E6
Character mistake: Noel Shempsky (the supposed Star Trek Nerd) attributes the quote "The needs of the many outweigh the needs of the few or the one" to James T. Kirk, when it was Spock who said it. (00:03:50)
Selling Out - S1-E9
Frasier: Roger, at Cornell University they have an incredible piece of scientific equipment known as the Tunneling Electron Microscope. Now, this microscope is so powerful that by firing electrons you can actually see images of the atom, the infinitesimally minute building blocks of our universe. Roger, if I were using that microscope right now, I still wouldn't be able to locate my interest in your problem.
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'.
Answer: Over multiple seasons, a long-running show's details can often change or are inadvertently forgotten, creating plot holes. This would be such an example.
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