The meme takes a now-infamous scene from the movie (the scene in which Hitler reacts to the news that Germany is about to lose the war) and puts satirical subtitles over the action (the movie is in German). Hitler parodies have been made for everything from "Hitler finds out Tony Romo dumped Jessica Simpson," to "Hitler is Fired from Whataburger," to, more recently, "Hitler Responds to the iPad."
Video still works, drop me a comment if it gets removed :(
Why has Constantin Films chosen to suddenly claim copyright on these clips after six years, especially when the clips generate interest from parties who are otherwise unlikely to even look at the film. Certainly plenty of wayward YouTubers and Internet-goers have been driven to discover the source of the clips that provide them with so much entertainment. So, yes, you wonder why Constantin Films is suddenly putting the kibosh on this obvious stream of free publicity.
Even the director of Downfall, Oliver Hirschbiegel, thinks the parodies are funny. He told New York Magazine in January 2010: "Someone sends me the links every time there's a new one. I think I've seen about 145 of them! Of course, I have to put the sound down when I watch. Many times the lines are so funny, I laugh out loud, and I'm laughing about the scene that I staged myself! You couldn't get a better compliment as a director."