Apple has begun airing a new celebrity TV advertisement for the iPhone 4S/Siri featuring director and screenwriter Martin Scorsese. In the commercial, Scorsese challenges Siri with questions about his busy day, then asks about current traffic conditions in the city.

Apple has been using several celebrities in its advertisements for the iPhone 4S since the device launched late last year. The celebrities play themselves in the ads, which is something Apple rarely does.