It has to be absolutely believable. It's also going between images and scenes with nudity and sexuality that would be seen, in conventional terms, as kind of sexually exciting. It's up against things that are much more medical and gynecological, and notoriously we, as a culture and a society, have some issues with that kind of thing.
I personally believe that the iPod is a frankly corrosive device because it encourages you to surround yourself with your favorites. The whole idea of a playlist is to surround yourself with your favorite things, and the interesting thing is that when you do that, they cease to be your favorites.