My fave book which treads the thin line between absudity and genius...poking fun at politics, the Nazis and pulp fantasy is....drum roll... The Iron Dream by Norman Spinrad
from Amazon - thank you cut and paste
Product Description
An alternate world novel in which Hitler leaves Germany after World War I, the Nazis never take power, Hitler emigrates to the United States, where he becomes an SF writer and writes LORD OF THE SWASTIKA, the novel within the novel, his fantasy of Nazi Germany in a world where the real thing never was. With an academic afterward explaining why such a thing as Nazi Germany could never have happen except in an heroic fantasy novel.
Published in a dozen languages, winner of the Prix Apollo, short listed for the Nationa Book Award, banned in Germany, then exonerated after 8 years of court action.
An excellent book if you get the joke
