I loved it. It's totally got The Pelican Brief / The Insider vibe, which is to say you'll be on the edge of your seat a couple times.
Granted, it's imperfect, but I was engrossed and the time flew by.
I guess my only beef is with Anne Hathaway. She is so hot and cold for me. There are times she seems perfect for a role, and a really great actress...and there are other times (like here) where I say to myself, "Who let her in for this role?" She feels really campy, goofy, and over the top. Know what I mean? Think Russell Crowe in Les Misérables, whereas Hathaway was PERFECT for Les Misérables.
Oh well, no biggie. Mark's the star and carries it well. You can tell it's a personal politics piece, but I completely agree: DuPont knowingly did wrong and should be held liable.