From 'Got milk？' to 'Where's the beef？', here are 15 of the best slogans and taglines in advertising history

A good slogan is brief, yet memorable.

There are slogans, and then there are taglines. Slogans sum up what a company stands for, whereas a tagline concludes an ad, usually a commercial, with a quick sign off.

Some of the most memorable slogans of all time — “Where's the beef？” or “Just do it” — not only sell the brand, but become synonymous with it.

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When you hear the phrase, “Just do it,” the first thing that comes mind is probably Nike. What about “Open happiness,” “The pause that refreshes,” or “It's the real thing”？ Those phrases belong to Coca-Cola.

That's the power of a good slogan. They're designed to stay with you (seemingly endless repetition through commercials and billboards don't hurt either).

There are slogans, and then there are taglines. According to brand consultant Laura Ries at Advertising Age, “Taglines are like the road sweepers at the end of a parade ... they seldom position the brand.” A slogan, when done right, “sums up a company's strategy,” she adds.

Here are some of the most memorable and recognizable slogans and taglines in advertising history.