"Less than two weeks after New York-based Kino International had announced that it had completed a frame-by-frame restoration of Fritz Lang's 1927 classic Metropolis and would release it in 2009, a long-lost and badly scratched original cut of the movie has turned up in Argentina, where it was shown to reporters for the first time on Thursday. Paula Felix-Didier, director of the Museo de Cine in Buenos Aires, told the reporters that the three-and-a-half-hour print is the only known copy of Lang's complete film. The film that has been shown in theaters since that time and which in recent years has become available on home video is roughly half that length. Kino said Thursday that it may include the newly discovered footage in its 2009 release."
That's pretty cool. It's a long sit even without the lost footage, but it's still cool. Nice bit of history found.