how do you write?

i saw this postcard advertising an online workshop:

computer required, clothing optional
yeah, like that's really going to happen.
but it got behenji thinking...do writers really have writing habits that are that varied?
i know vikram seth writes in bed and i believe hemingway only wrote standing up. i write sitting at my kitchen table, which i believe many others do too. but before i come to the table, my house has to be clean. dishes must be in place, each sock must be folded. all papers must be filed alphabetically and so that is why, dear friends, i am still on page one of my first novel.
so how do you write? what are your quirks? behenji wants to know...