Nightmare Fuel / Captain America: The Winter Soldier

• The concept of Project Insight takes real-life modern-day paranoia about government intelligence gathering and use of personal data by social media giants and turns it up to eleven. Put simply, HYDRA, having infiltrated SHIELD, plan to use an algorithm created by Armin Zola to collect and collate every piece of personal information they can about everyone on the planet, then use that information to predict who could be a future threat to them and eliminate them all at once using three upgraded helicarriers. That's right, HYDRA weren't just planning to take out their enemies, they were planning to massacre anyone who could ever possibly pose a threat to them. As seen on the targeting screen (before Cap switches the carriers to target each other) this amounts to thousands of people in Washington DC alone.
• The Winter Soldier's first appearance. Fury's just escaped several truckloads of assassins disguised as police, he's driving away and planning his next move...and then the camera shifts focus to reveal a man standing in the middle of the road as this unearthly wailing starts up. He doesn't speak, doesn't react to the screaming crowds, just blows up Fury's car and starts calmly walking toward him. Fury only manages to escape by carving through the ground.