This is John Larroquette's directorial debut. He would be the first of the actors to direct a show; Harry Anderson and Charles Robinson would follow suit. Mr. Larroquette would direct one other show in season four.
Mel Tormé recorded a rendition of "Good Time Charlie's Got the Blues" especially for this episode.
The title is based on the song "Johnny I Hardly Knew Ye," a popular Irish traditional anti-war and anti-recruiting song.
Leon responds "that his eyes came as a set," the same line that Harry did in season 2's The Nun show.
When Leon asks Harry for money to see a movie, one of the films he wants to see is "I Dismember Mama". There really is such a film. Its title spoofs the title of the play "I Remember Mama". (The other film Leon wants to see is "Massacre at Hacksaw High". The closest title to a match is "Massacre at Central High".)