Alex Gibney keeps getting better and better. A documentary initially looking into the Stuxnet cyber-attack on Iran's nuclear facilities, mushrooms into the discovery of how the US/Israeli-made malware, unbeknownst to the US, was unleashed by Israel on all computers of the world, including yours and mine, just to attack those in Iran. Watch this to understand how we can all be sent back to the stone age at the blink of an eye, and how we're not even allowed to discuss it because nobody wants to be found culpable by discussing it. Watch this, and be afraid.
PS: Also, check out Godfrey Cheshire's 4-star review on rogerebert.com.