Savant

Neatorama has a fascinating look at the "10 Most Fascinating Savants in the World." Truly amazing. They write about Kim Peek (the movie Rain Man is based on him):

But what Kim can do is astounding: he has read some 12,000 books and remembers everything about them. "Kimputer," as he is lovingly known to many, reads two pages at once - his left eye reads the left page, and his right eye reads the right page. It takes him about 3 seconds to read through two pages - and he remember everything on 'em. Kim can recall facts and trivia from 15 subject areas from history to geography to sports. Tell him a date, and Kim can tell you what day of the week it is. He also remembers every music he has ever heard.