Hello,
I saw 'Zodiac'. It was very good. Very long. It was just a cut above a documentary (done documentary style), so you didn't get much into the personal lives of the characters. It wasn't melodramatic or Hollywood-ized. In other words, they didn't make a story around the serial killer (like 'Black Dahlia'). They merely made a movie about the events. I thought it was well done, Jake was perfectly fine in a role about a man who wasn't a Leader-Of-Men Charismatic. He's being low-key, playing a low-key character in a ensemble piece.