Thiefs or Reality (2001)

A mind-bending sci-fi symphony, Stanley Kubrick's landmark 1968 epic pushed the limits of narrative and special effects toward a meditation on technology and humanity. Based on Arthur C. Clarke's story The Sentinel, Kubrick and Clarke's screenplay is structured in four movements. At the "Dawn of Man," a group of hominids encounters a mysterious black monolith alien to their surroundings. To the strains of Strauss's 1896 Also sprach Zarathustra, a hominid invents the first weapon, using a bone to kill prey. As the hominid tosses the bone in the air, Kubrick cuts to a 21st century spacecraft hovering over the Earth, skipping ahead millions of years in technological development. U.S. scientist Dr. Heywood Floyd (William Sylvester) travels to the moon to check out the discovery of a strange object on the moon's surface: a black monolith. As the sun's rays strike the stone, however, it emits a piercing, deafening sound that fills the investigators' headphones and stops them in their path.