.: Metropolis (1927) by Fritz Lang :.

Metropolis is a 1927 German expressionist film in the science-fiction genre directed by Fritz Lang.  It´s set in a futuristic urban dystopia and makes use of this context to explore the social crisis between workers and owners inherent in capitalism. The film was produced in the Babelsberg Studios by Universum Film A.G. (UFA). Metropolis was cut substantially after its German premiere, and much footage was lost over the passage of successive decades. There have been several efforts to restore it, as well as discoveries of previously lost footage. A 2001 reconstruction of Metropolis, shown at the Berlin Film Festival, was inscribed on UNESCO's Memory of the World Register in that same year. In 2008, a copy of the film 30 minutes longer than any other known surviving copy was located in Argentina. After a long period of restoration in Germany, the restored film was shown publicly for the first time simultaneously at Berlin and Frankfurt on 12 February 2010. Today, Metropolis is widely regarded as one of the greatest films ever made, and Lang's finest achievement as a director. (source: Wikipedia)