Let There Be Light (1946). Documentary following a group of US soldiers who have sustained debilitating emotional trauma. Despite being produced by the US army, it was later banned for its "demoralizing" effect on army recruitment.
WWII: The Complete History [Part 1] (2000) This is the best documentary I could find on the precise history of the world wars.. Very simply and elegantly explains the history and conditions that led to World War II.
My 16 year old cousin sent a weather balloon 111,000 feet into the atmosphere. It lost connection with his tracker shortly after, and was found 5 weeks later, 57 kilometres away in a paddock. He got some really impressive footage of south-east Queensland, Australia.