Also: On the waterfront, Seventh Seal, Paths of Glory, Metropolis, Nanook of the North, anything by the Lumière brothers, The Birds, American Graffiti, Vanishing Point, Annie Hall, The Bridge on the River Kwai, Bonnie and Clyde, The Birth of a Nation or Triumph des Willens(I recommend either of these only if you have very strong stomach for historic injustices and prejudces), Goodbye Lenin!, Der Untergang, Cannibal Tours...

Uh Cannibal tours I would be surprised if you found it anywhere and if you did it would probably be very expensive but if a miracle happens and you aren't queasy about actual tales of cannibalism- great film.