The song Frasier and the Checkmates sing, "Goodbye, My Coney Island Baby," is a popular barbershop tune composed in 1924 by Les Applegate.
As Frasier recounts the successes of his high-school classmates, Kelsey Grammer is clearly doing an impression of Bette Davis, as was often his wont to do.
The brand name of the cheap dog food Martin buys for Eddie is "Thrifty Dog."
The character "Man in street" is played by actor Ken Daly. Coincidentally, "Kenny Daly" is the character name of KACL's station manager.