I took my daughter to a workshop for young girls last year which showed this film. Girls and parents were shocked. I'll often remind my daughter of this workshop when I hear her putting other girls down or calling her sister names. I think the film speaks for itself.
While I believe most people I have come across in blogshpere have the same philosophy as I, it is often hard to get around onslaught of images from the media. If you have daughters talk to them early - you can check out other Dove films at: