I watched that programme about the dreadful Da Vinci code too, the connections between left-handedness, dyslexia and creativity were interesting. I've often wondered what they make of me, when I was 16 (?) I was peeling an apple and my mother asked why I was using the knife in my left hand. That was the first time that I, or anyone else, realised that I used different hands for different tasks. It's not ambidextrous as I can't change hands, bit I'm sure there's a name for it. Contrary is what OH calls it.