In the scene where Frasier and Martin go to McGinty's to look for Maureen, Jane Leeves' mother, Peri Gilpin's mother, and David Hyde Pierce's father can be seen sitting at a table together. They were in the audience during the filming of the episode and were pulled on stage by the director to be extras in the scene.
Daphne's friend Charlotte was played by Jillie Mack who is Tom Selleck's wife.
Jane Kaczmarek also played a police officer in six episodes of Hill Street Blues
Many viewers are confused as to what the closing lyrics really mean. There is some dialog in this episode that helps clear that. When talking with his father at the bar about the mix up, Frasier says he has egg all over his face. Thus the lyrics could mean how Frasier messes up or scrambles his life up and winds up with egg on his face.
McGinty's entrance is similar to Cheers in that you have to go down steps to a lower level to enter the bar except McGinty's steps are on the opposite side from top right to bottom left whereas Cheers went from top left to bottom right.