6 The Energizer Bunny - 1989

Some two decades ago, an Energizer competitor launched an ad with battery-operated bunnies. By the end of the spot, the only bunny left standing was one powered with the company's batteries. Inspired, Energizer launched a parody commercial--but this time the last bunny standing was powered by Energizer batteries, of course. The battery-operated mascot has been going and going ever since.