The Day the Earth Stood Still

The Day the Earth Stood Still (2008) is an intriguing, powerful and even moving modern sci-fi blockbuster that tackles subjects of great depth. Klaatu, an alien sent to try to change human behavior in an effort to save Earth from environmental degradation, comes to Earth to assess whether humanity can prevent the environmental damage they have inflicted on their own planet, leading to a dramatic ultimatum for the planet's survival.