Left handed for eating, writing and umm...other things. Right handed for using the mouse.
Also, you should probably put partial left/right handedness into the poll, as quite a few people mistake it for ambidexterity. Being ambidextrous means being capable off using either hand for whatever task, and is not being able to do one thing in one hand, and another thing in another, that's partial handedness.
You're ambidextrous if you can say, write your name on a piece of paper, then switch hands and be able to write your name again without any significant decrease in quality.