In Germany the movie is tagged as a comedy-film and not as a horror-film. The advertising slogan on the DVD-Package announces "Here lives the spirit of Ed Wood".
When the Skeleton Man goes into the power plant and confront two guards with machine guns and kills them, when he ram them against the wall, if you watch closely, you can see that the Skeleton Man has legs and is wearing pants.
About 2 minutes into the movie we see a man at a table using a pick-like instrument to clean a vase. The phone rings, he answers and we see the pick but when the camera pulls out he is then using a brush on the vase.
Staff Sgt. Oberron: Listen. No cars, no planes... no birds. That's what the first men heard. That's what the last men will hear... just the wind blowing through the trees, and the world turning.