7. All Plant Life on Earth in 'The Happening'
In The Happening, Earth's plant life has somehow "decided" that humans are an existential threat that needs to be eliminated. People start committing mass suicide and it's because of a neurotoxin released by the plants. It should come as no surprise the movie was directed by M. Night Shyamalan, and who knows what he was thinking? Maybe he really thought he could make the plants scary?