This movie goes beyond the normal CGI creature movie that we're accustomed to and relies more on a psychological fear.One that's felt more than seen.A rollercoaster ride of emotion..fear,survival,hope,determination,guilt,doubt,compassion...you name it.And of course the acting performance of Sandra Bullock is what keeps you glued to the climax.It is both engaging & suspenseful. Rather they like it or not,everyone's talking about it!!