Have you ever encountered someone with HSAM?

[GTRS Fiero]

HSAM = Highly Superior Autobiographical Memory

I met someone with HSAM.  This is a very interesting thing.  He could tell you the day of the week for any date since he was born.  He could remember the day various songs and albums were released, the day a song went to number one on the charts, and all sorts of other things.

[GTXVette]

And I thought I was Just Full of Useless Trivia!.