Watched Zodiac (2007 Film)

I watched this with my girlfriend last night and finished it in the morning. It's based on the real life events of the Zodiac killer, a psychopath who rampaged San Francisco in the 1960's and 1970's.  What sadden me most was the fact that most of the Zodiac letters and victims get very little show time than they should have. There's also a bit a historical inaccuracy and dramatization in there as