Frasier paraphrases George Bernard Shaw as saying "in this world there are only two tragedies. One is not getting what one wants, and the other is getting it." Kate Costas says this quote is by Oscar Wilde. She is correct.
Frasier and Kate argue over the key signature of Bartok's Concerto for Orchestra, with Frasier saying it is D-minor and Kate saying it is C. Neither is correct. The orchestra is not specified in what key it is played.