the first one that comes to mind is Der Untergang (Downfall for the americans :P).

for those who dont know the movie: its about Hitlers last days in the bunker in Berlin.
a very beautifull movie.

not very topic related but i really hate 'Murica for re-doing every good foreign-language movie like they did with 'The girl with the dragon tatoo'.. the Swedish trilogy was a huge hit and within no-time there was an american re-make.
and they are going to do the same with Intouchables (a french movie)