The Amazing Iceman

Discovery HD had a special called Superhumans. They documented 4 individuals that had incredible talent/powers. A woman who can see music as colour, a man who was born blind but can draw perspective perfectly, a man who is a walking calculator able to compute any combination of numbers in seconds and the 4th was the Ice Man. Awesome documentary to see!
 
Master Baiter said:
Discovery HD had a special called Superhumans. They documented 4 individuals that had incredible talent/powers. A woman who can see music as colour
The term for that is synesthesia although it's not common, then again it's not all that uncommon either. Among others who experienced it was Nikolai Andreyevich Rimsky-Korsakov.

It appears to have a genetic link.