Niles explains the main points of the myth of Oedipus to Martin: that he sleeps with his mother and kills his father and then gouges out his own eyes. A nod to the eye gouging occurs when Frasier blinds himself with bug spray.
Mia is probably the only character in the entire series who has no reaction whatsoever when she first enters Frasier's apartment.
Guest star Rita Wilson has a Star for movies on the Hollywood Walk of Fame. She is also married to Tom Hanks.