Interesting side-node about 'infamous'. Just because a movie depicts a terrible event or subject (Hitler in this case), it doesn't mean the move itself is 'infamous'. The movie (i.e. the artists) didn't do a terrible deed (e.g. completely misrepresent Hitler as innocent), so in this case the movie is simply "famous for it's Hitler in the bunker clip".
I think it's more infamous because the clip has been used memetically as a joke on other people/things freaking out about stuff. So the movie's not infamous but the clip is.
But it's still just famous because it's used in a humorous context. When I think of all of the combinations of those clips I've seen, I think of them in a funny way, not a bad way.
Maybe those clips are really offensive to some people, in which case they would be infamous to the offended.