A man was found next to a dumpster in 2004. Since then, no one, not even himself, has any idea who he is!
He adopted the pseudonym Benjaman Kyle (BK), because he was found next to a dumpster behind a Burger King (BK). When found, the doctors saw that he had three depressions on his head, which indicate that he was hit by a blunt object. That might have been the cause for his Retrograde Amnesia, which has left him with no idea of who he is since 2004. In fact, when he woke up, he couldn't even recognize his own face!
Efforts to find out his identity have failed, and have included sophisticated methods like DNA testing. The saddest part is that because he has no social security number, he can't get a job anywhere. It wasn't until 2011, when he moved to Jacksonville Florida, that with the help of a Florida senator, he was able to obtain a photo ID. That, plus the combination of exposure from a student documentary from FSU, helped him land a job and a safe place to live.