Another one, but it's AU, so read the plotline before you watch :D
Like A Serpent's Kiss: YouTube
Sam's at Stanford, perfect girlfriend, perfect life, when suddenly he starts having strange visions about a man he's never even seen before. When it finally becomes too much, he sets out in search for the man he keeps seeing dying.
Dean Winchester made a deal one year ago, to save his brother's life. The only condition was that Sam would never even remember he'd existed. Reckless and suicidal at having to be kept away from his brother, Dean lives out his last year in anguish and pain.
Will they find each other and save Dean before his deal comes due and it's too late?