I'm left handed too - writing and brushing teeth. Cricket and everything else i can think of - right-handed. Perhaps it's something about things you learn early.
I'm not left handed (however I am still a creative genuis with psycopathic tendancies :P) but I noticed some time ago that my partner, my bestfriend, my ex and my therapist are all left handed. Maybe I have a secret fetish for left handed people?