If ever there were a dynamic duo, Justin Timberlake and Jimmy Fallon might be it, and they're certainly taking that route for the latest ads from Apple showing off the new iPhone 6 and iPhone 6 Plus. The (so far) pair of ads feature the two offering voice overs for the new phones, in particular highlighting the new Health app in iOS 8.
It's a departure from recent Apple ads, which have taken a more aspirational route. Though that was in a period where Apple didn't have new devices that they were trying to push. Now they've got new iPhones, coming in just ten days. So it's time to advertise, and it's time to have fun doing with that. So these new ads are fun.