Remember (illegally) downloading your favorite Britney hits from Napster? And after that, LimeWire? And once that got shut down too, you scrambled to find another site to get your tunes? Well, if it weren’t for Jobs and his constantly creative mind, we’d probably still be hopping from one illegal service to the next. So, in 2003, it was goodbye downward-spiraling music websites, and hello iTunes! It instantly proved irresistible to customers, especially with its tight relationship with the best-selling iPod. Today, iTunes is the largest online music retailer in the world, with over 200 million registered users who have so far downloaded over 15 billion songs — not too shabby, if you ask us.