New Coke Craze
There are fads you wear, fads you trade, and then there are fads that somehow make grown adults sound personally betrayed in the checkout line. That was New Coke. One formula change and suddenly everybody acted like the country had been tampered with at the molecular level.
That is what makes it belong here. This was not just a product launch. It was a full conversation event. People tasted it, judged it, compared it, complained about it, defended it, and kept talking about it long after a normal soda release would have gone flat. Kids noticed because adults would not shut up about it, and plenty of kids got in on the taste-test side of the drama too. For a while, soda became a topic with sides.
And there was something extremely 1985 about that. The country was so brand-aware by then that a soft drink could become an emotional referendum. New Coke did not win the year, but it absolutely won a place on the list because it turned ordinary consumer behavior into a pop-culture spectacle.