According to Annie Jacobsen in her book "Area 51: An Uncensored History of America's Top Secret Military Base" there absolutely was a flying saucer that crashed in New Mexico in 1947.
It's a little shocking and freaky to comprehend though.
http://www.npr.org/...
It was piloted by 2 people who had been altered (perhaps by Josef Mengele himself) to look like aliens.
The plan was "to create panic in the United States with this belief that a UFO had landed with aliens inside of it. The idea was to see if the Soviets could overload the US's early air-defense warning system, and make the country vulnerable to an attack.
OK, my head is still spinning folks.