Maybe all the wack jobs and conspiracy theories are right.  It seems like the FBI has released a memo regarding the rumored UFO crash in Roswell, New Mexico in the 1950's. 

Well, if it's on the internet, it's gotta be true.  So I gotta believe that this document that the FBI has put up on it's website is proof aliens are not only real, but they have been to earth.  The FBI has recently published it's "Vault" online, including a document to the director of the FBI with details of the UFO crash and the resulting alien autopsy.  You can see the original article and copies of the documents at Daily Mail.