Though a well-known NYC opera supporter and afficionado, growing up in Tulsa, Oklahoma, young Leonard Rosenberg (Tony Randall) was exposed to plenty of both country music and square dances. This helped Randall in the scene at Billy Joe's hoedown; he needed no extra direction from Jay Sandrich, as Felix barks out the calls in the square dance scene.
The $500 that Oscar owes Billy Joe in this October 10, 1974, episode equates to roughly $3,000 in 2022.
Though in hindsight, many people remember actor Pernell Roberts as a doctor in Trapper John, M.D. (1979), he had - at the time of this episode's filming - been primarily known for his work on the series, Bonanza (1959), as a 'good ole country boy'.
The line "You can stuff your sorrys in a sack" was first used in this episode and later used by "Seinfeld" in the classic episode "The Betrayal".