What is the method to your madness?

I was just talking to a friend of mine on Facebook about different writing styles. She’s more streamlined and can’t write out of sequence. I, on the other hand, am chaotic in my writing. I write scenes as they come to me and incorporate them later when I get to them in my books. The last line of the second novel in my Chronicles of Fallhollow series was written before the first word of the 1st novel in the series. Crazy, huh.

So what is your method to your writing madness?