First drafts and thoughts and notes and all those preproduction papers are usually always written by hand. Though I put less words on the page and write incredibly slowlyer, my thoughts are clearer and more maleable. Then I take that tedious extra time (like an hour per 1000 words) to type everything up.
I'm not sure whether I would write by hand or type a second draft yet, I've only done first draft to final draft up to now.
Oh, and for things that have deadlines like Nanowrimo and ScriptFrenzy I just type, cause transferring 50 000 written words onto the computer would be death. (Though when I can't reach a computer on a ceratin day I will write by hand, though this chops out so much time once I have to type it all up, I can't miss out on a day). Luckily (Unluckily 'cause it was devoid of any challenge) this year's script frenzy I never had to write by hand in some strange place... I always had my computer.