Remember when you could recognize a commercial before it even finished? The music started, a familiar voice came on, and you already knew what was being sold. Back in the 1970s, 80s, and 90s, commercials weren’t background noise. They were part of the culture. Families watched together, and the best ones turned into phrases people repeated without even realizing where they came from. Some ads didn’t just sell a product. They changed habits. They changed expectations. They even changed the language. Starting in the 1970s, the world of marketing shifted dramatically, something Mad Men captures perfectly. Advertising stopped feeling like a list of features and started feeling like storytelling. These campaigns didn’t just influence what America bought. They shaped how America shops, eats, and thinks.
#1: De Beers “A Diamond Is Forever”
De Beers didn’t simply convince people to buy diamonds. It convinced people that diamonds were the “correct” way to propose. The slogan “A Diamond Is Forever,” written in 1947 by copywriter Frances Gerety, reshaped engagement-ring expectations so thoroughly that it began to feel like an old tradition. It also quietly pushed the idea that a diamond should never be resold, because “forever” implies permanence. The clever part is how emotional it was.
