I'm reading Here's the Story: Surviving Marcia Brady and Finding My True Voice by Maureen McCormick.
I'm only about fifty pages in but it is fascinating and quite sad at the same time. Who knew behind the happy face of Marcia Brady that Maureen McCormick was so unhappy and full of self doubt. Maureen is pretty blunt in her story telling, frankly recounting the life behind the Brady Bunch for her personally. When I finish I will give a more proper review for you all, but I do recommend the book.
(You can find it at Barnes & Noble in the bargain books currently for $5.98.)