This might reveal supremely bad taste or judgment or both, but I had to share this from the feminist philosophers blog - an example of a new genre of so-called "Hitler parody" that apparently is being posted on YouTube.
This example is titled "Hitler as a teaching assistant" - I agree with the feminist philosophers not only that it is gendered, but also that it is funny (esp. in the world of academia / higher ed), and begs the question of why it is funny.
I am not a historian, but "Hitler parody" seems to have existed since Hitler himself was alive. (Were I a historian, I might know exactly the right citation to insert here. You know where to e-mail me...) He must have been aware of the resemblance to Charlie Chaplin, who would have been quite a celebrity at the time. Also, if you have never watched the original 1942 version of "To be or not to be" (which Mel Brooks remade in the 1980s), put it on your Netflix queue. It contains memorable (and hilarious) sequences concerning "The man with the little mustache..." and a joke that begins, "They named a brandy after Napoleon..." (and ends with the Fuehrer as a piece of cheese).