The Day the Earth Stood Still (2008)

Overview

A representative of an alien race that went through drastic evolution to survive its own climate change, Klaatu comes to Earth to assess whether humanity can prevent the environmental damage they have inflicted on their own planet. When barred from speaking to the United Nations, he decides humankind shall be exterminated so the planet can survive.

Cast

Keanu Reeves

Klaatu

Jennifer Connelly

Helen Benson

Jaden Smith

Jacob Benson

Jon Hamm

Michael Granier

Kathy Bates

Regina Jackson

John Cleese

Professor Barnhardt