Jonah Lehrer - Contributing Editor of Wired has a new book out titled, Imagine: How Creativity Works. I was intrigued so I decided to do a quick google search and found this video.
He shares scientific research on how the brain comes to those 'A, ha!' moments, why brainstorming doesn't work, how criticism is essential for creativity, and other tidbits on how creativity works. Planning to check out the book eventually.