For as long as there have been products for sale, advertising has been a key component of the sales process. Every business needs customers, and these customers have to find out about a product somehow. With so many different companies vying for consumer attention, it's hard to stand out and be memorable. This rings especially true in the gaming industry, where console publishers need to convince prospective buyers to shell out hundreds of dollars for their system, and hopefully not a competitor's. Over the last few decades, there have been plenty of memorable gaming marketing campaigns, although not all for the same reason. After careful consideration, we have put together a list of the best and worst console ads of all time.