I don't think it's appropriate to try and make money from it, or make anything "fun" with it. There are millions of people who really can't see the humor of anything that has anything to do with Hitler.

I would consider redirecting it to his Wikipedia entry, redirecting it to the donation page of the njdc, or something equally classy.

I think there's a lot of room for offensive humor and "crossing the line" -- trust me, I got my PHD in that, from the university of South Park. But in the end, there are too many people on this earth that are still alive that have lost members of their family due to that man. Doing something fun with it would not be respectful to them, their families or what they went through.