Last appearance of bar fly Al
Frasier tells Cliff that his father was a scientist and his father is dead. This is addressed in an episode of "Frasier." Frasier tells them that Martin was a scientist because he is ashamed of him being a policeman. Also, he says that his father is dead because they never got along when he was growing up and had an argument, which is why he lives in Boston in the first place, and not in Seattle (where he ends up in "Frasier").
Lisa Kudrow would later be cast as Roz in the Cheers spin-off Frasier but was let go and the role re-cast with Peri Gilpin.
The episode title is a play on the recurring line "Two girls for every boy" from the Jan and Dean song Surf City.