I forgot one thing about Zodiac; it is extremely bland and uninteresting visually. It seemed it like it was trying to be wide open and mysterious like a Haneke film, but it ended up feeling overpolished and just average. But a lot of our perceptions about a film's aesthetic is affected by what's actually happening in the film too.
Just a bad film overall. Fight Club was so much better. And I'd like to see Se7en too.