"Can I help you?" "No." And then we get these two beautiful reaction shots, so very pregnant with meaning. Each of Zodiac's 180 minutes is fascinating for one reason or another -- a palatable Jake Gyllenhaal, a matured Mark Ruffalo, a virtuosic attention to detail by director David Fincher -- and this end is no different. As Roger Ebert aptly said, Zodiac is the All the President's Men of serial killer movies.