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.