Zeitgeist (
pronounced [ˈt͡saɪtgaɪst] (help·info)) is a
German language expression meaning "the
spirit of the age and its
society". The word zeitgeist describes the intellectual, cultural, ethical and political climate of an
era or also a
trend. In German, the word has more layers of meaning than the English translation, including the fact that Zeitgeist can only be observed for past events.

more at http://www.zeitgeistmovie.com/