The Day the Earth Caught Fire (1961)

When the Americans test a nuclear weapon at the South Pole at the exact moment that the Soviets are testing their own weapon at the North, the earth's axis is jolted out of alignment, causing catastrophic changes in global weather patterns. Additionally, the earth has been dislodged from its orbit, and is now hurtling towards the sun. It's a race against time as the world prepares for additional nuclear detonations which could restore life as we know it. This classic piece of British science fiction won a British Academy Award for Best Screenplay and has been completely restored by Anchor Bay, including tinted sequences not seen since the movie's original theatrical release in 1961.