The first season opening credits of The Munsters (1964) were an outrageous parody of the opening credits of "The Donna Reed Show", which always began with Donna Reed lovingly passing out lunches to her departing family members as they left the house one by one. Yvonne De Carlo, as Lily Munster, did the same thing.
During the show's early years, whenever a scene takes place in a supermarket, look very closely in the background. Chances are, you'll see large amounts of Campbell's Soup, V-8 Vegetable Juice, Franco-American Spaghetti, and various Johnson & Johnson products including their famous baby powder. Not coincidentally, those brands were the series' original advertisers during its network run.