Continuity: Frasier is talking about running for the condo board and lifts his coffee cup to his mouth. The shot goes to Martin who says, "You might be the best man for the job," and Frasier's cup is still on the table.
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Quotes
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
In the opening credits Niles mentions that Daphne had lost 9 lbs. 12 oz at the weight-loss spa. This is probably a deliberate reference to the birth of Janes Leeves' (Daphne) daughter. According to www.imdb.com, she was born in Jan 2001 and weighed 9 lbs. 12 oz. See more...
Frasier (1993) - 1 mistake in "Proxy Prexy"
starring David Hyde Pierce, Jane Leeves, John Mahoney, Kelsey Grammer, Peri Gilpin (add more)
Updates: 
Series 10
Proxy Prexy (season 10, episode 3)
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