The Day the Earth Stood Still (1951)
A spacecraft lands in Washington D.C. and an alien emerges, flanked by a menacing robot with destructive capabilities far beyond anyone's imagination. So begins the science-fiction thriller The Day The Earth Stood Still, a classic "atomic movie" from the 50s that would go on to inspire alien-invasion films for decades to come. Rebuffed in his efforts to meet the world's leaders and warn them of the earth's impending doom, the alien, Klaatu (Michael Rennie), takes to the streets.

Klaatu's plea for peace is embraced by a pretty, young woman (Patricia Neal) and an eminent scientist (Sam Jaffe), but the rest of humanity reacts with mistrust, fear and violence. With time running out, Klaatu is forced to demonstrate his awesome powers in a mind-boggling display, teaching all of mankind a lesson for the ages. Watch The Day The Earth Stood Still and and you will never forget these words - "Klaatu barada nikto!"

The Day the Earth Stood Still (2008)
A remake of the 1951 sci-fi classic of the same name, THE DAY THE EARTH STOOD STILL follows astrobiologist Helen Benson (Jennifer Connelly) as she is unceremoniously plucked from her everyday life with her stepson (Jaden Smith), and whisked away to consult the government on a top-secret matter. That matter happens to be the arrival of a massive glowing sphere in Central Park, accompanied by a towering robot-like protector dubbed Gort and an alien ambassador named Klaatu (Keanu Reeves), who takes up human form to communicate with the people of Earth. When Klaatu finds himself faced with hawkish, uncompromising officials, he goes on the run with Benson and her son as the fate of the world gradually becomes clear.