The Roswell, New Mexico, UFO crash of 1947 was the result of -- here it comes, wait for it -- top secret Nazi technology. No alien spacecraft, no alien bodies, but an aircraft called the "Bell" (depicted above from a 2008 Discovery Channel documentary). At least that's what a new German film seems to suggest, according to OpenMinds.tv. To be sure, it's questionable what actually happened in the outskirts of that small town 67 years ago.