The commentaries - both cast and director, etc - are one of the biggest reasons for me to get a more developed DVD set even if I already have a "bare bones" version. What struck me about the trailer here is the sheer beauty of del Toro's vision. All of these creatures looked incredibly fantastic, in a way I haven't seen from others like Peter Jackson or others. Don't mistake me here... I love PJ's vision in the LOTR movies, but it's nice to see fantasy expressed in a visually very different way.