The marketing prowess of Apple Inc. is legendary, a reputation that was bolstered again Tuesday by a slick 30-minute online video that offers a guided tour of the iPhone 3G coming July 11.

The video is much longer than a previous video that appeared for the first-generation iPhone a year ago, but features the same narrator, Bob Borchers. Borchers is not a professional actor, as many have thought, but is the senior director of the Apple iPhone product line.
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