The latest one that I have seen is this side splitting rendition of exactly what has been going on inside the EQC operation in Christchurch.
The Guardian had a good article on the reuse of Downfall in 2008.
The scene is Adolf Hitler’s bunker. The Führer stares at a map, surrounded by fearful generals. As they deliver bad news, he removes his spectacles with a trembling hand, the fury rising in him like a volcano. Speaking guttural German, his unkempt hair flopping over his forehead, Hitler explodes in a hysterical rage about Cristiano Ronaldo leaving Manchester United. Or about his crushing defeat in the Glasgow East byelection. Or about his stolen car, his Xbox Live console, or just about anything else you can imagine.
These are the improbable scenarios sweeping YouTube and other video sharing sites on the web. In clips typically lasting about four minutes, the pictures and sound are from Downfall, the hit 2004 German film about the last days of Hitler, played by Bruno Ganz. But the subtitles bear no relation to what is being said. Instead they have been rewritten, and carefully synchronised to the action, by internet jokers evidently with time on their hands. And what started as a one-off gag has now been repeated again and again over hundreds of different subjects. Downfall spoofs are now running riot over the web, lampooning politicians, footballers, even Hitler himself.
Godwin’s law (also known as Godwin’s Rule of Nazi Analogies or Godwin’s Law of Nazi Analogies) is a humorous observation made by Mike Godwin in 1990 which has become an Internet adage. It states: “As an online discussion grows longer, the probability of a comparison involving Nazis or Hitler approaches 1 (100%).” In other words, Godwin put forth the hyperbolic observation that, given enough time, in any online discussion—regardless of topic or scope—someone inevitably criticizes some point made in the discussion by comparing it to beliefs held by Hitler and the Nazis.