If you're going to watch Utopia, might I suggest the original UK version from 2013? Also for movies, if you're gonna watch good 70's conspiracy movies as listed above; I would also add: The Conversation, Blow Out, and All the Presidents Men. I have a ton more, will add later if I remember ;)
Quick addition: There was a movie done 2014 with Jeremy Renner called 'Kill The Messenger'. It's about Gary Webb and his uncovering the CIA involvement in trafficking cocaine into the US back in the 80's. It's pretty good. Here's the trailer: https://www.youtube.com/watch?v=VW4XO-52ubE