I am not usually one to delve into the "making of..." books, and I sometimes even don't buy them, but this is one with some behind-the-info that's pretty juicy.
The photos are okay, very similar to SW:365, so maybe that book has gotten me spoiled. But the comments by Lucas, especially when he references his early script drafts, are awesome! If there's interest from others who have read this, we can post some of them. In the meantime, read this one, people!
Some teaser phrases that are mentioned in it:
The Whills (and R2-D2? )
midichlorians as fathers
Dooku and Tuskens