Put Your Music Collection in Your Pocket, 2001
The iPod wasn't nearly the first digital audio player around, being beaten to the punch by Creative and Diamond Rio, but it was the first to use the 1.8-inch hard drive that would allow a mix between storage (unlike the paltry 32MB flash-based Rio) and pocketability (unlike the hubcap-sized Creative Jukebox). But even more than that, the iPod promoted an ecosystem, an idea totally foreign at the time. One company would make your portable device, the computer it syncs with, and the music software it uses to sync. Even more, that same company would sell you the music you'd put on the device. It turned digital music from what had been a confusing and questionably lawful process into something simple and clean.