The character Ilia Astrov was based on real-life Romanian tennis champion Ilie Nastase, who was well-known for his fiery temper.
When Mac comes home and talks to Mildred there is a box of Ritz crackers on the table. Although the product's name is crossed out, the famous Ritz apple pie recipe is visible, which even though is made made entirely with Ritz crackers, actually tastes like an apple pie.
Bryan O'Byrne (Clifford, the butler) and Susan Saint James appeared together again, five years later, in Love at First Bite (1979).