I was reading Wikipedia's list of unusual articles (which I strongly recommend you check out) and I found out about a movie called Surf Nazis Must Die. It's described as "for anybody who thought that the Space Nazis trope was insensitive." You can watch the movie here. I think it would be cool if somebody made a crossover parody with it, similar to how HRP's The Final Conflict was a crossover with Iron Sky.

An oldie but a goodie, got 40K hits on another upload as well, plus 43K on youtube