Continuity mistake: When Frasier and Roz are in Cafe Nervosa, and he is showing her his plan to trick Bulldog, Roz is looking at a magazine. She puts it down to look at his notebook but in the next shot she is still holding the magazine.
Frasier (1993)
1 mistake in Tales From the Crypt - chronological order
Starring: Kelsey Grammer, David Hyde Pierce, John Mahoney, Jane Leeves, Peri Gilpin
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.
More trivia for Frasier
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.