Now for some Trivia:
Der Untergang (Downfall) 2004, was directed by Oliver Hirschbiegel. He has spoken positively regarding the many parodies. In 2010 he stated, "Many of them were funny, and they were a fitting extension of the films purpose".
Bruno Ganz who played Hitler, studied for months on getting the character right. Bruno has won many Theatre and Movies in his career. He is now in his early 70's.