When a film is great, a reviewer wants to appreciate it. He spends time on finding ways to express that cinematic brilliance in terms of prose. When a film is outright abominable, the reviewer wants to draw out his daggers. He spends time on finding innovative ways to poke at the disgrace. Both cases make for interesting writing experiences. However, when the film is mediocre, the reviewer wants to do nothing with it. He spends time - oh, so much time - trying to get something out but nothing comes. Because there is nothing in mediocrity that inspires an emotion in a person.