The Quick 9: Nine Wicked Facts

I'm, oh, five years behind the rest of the world, but I finally saw Wicked. It was, as promised, awesome. Even my husband liked it (although he still wonders why they have to sing everything). I was so taken with it I had to come home and do a little research on its background "“ here's what I found out.
3. The Wicked Witch didn't actually have a name in L. Frank Baum's Oz books. When Gregory Maguire wrote Wicked, he named her using Baum's initials "“ L.F.B. = El-pha-ba.
6. You'd probably never recognize it, but there's a tiny little tribute to "Over the Rainbow" in the song "Unlimited/I'm Limited" theme. It's only the first seven notes of the song because, Schwartz said, copyright law dictates that eight notes can be considered the theft of a song. "Of course it's obviously it's also disguised in that it's completely different rhythmically. And it's also harmonized completely differently.... It's over a different chord and so on, but still it's the first seven notes of 'Somewhere Over the Rainbow,'" he said.
9. If you're like me, you watched the show and thought, "How does Elphaba's makeup not rub off on everything she touches?" The answer? MAC makeup, and yes, it already came in that color of green. They dilute it a little bit with water; Menzel likens the makeup application as watercoloring. You can see her getting the green treatment here:
Any Wicked aficionados out there who can give us the scoop on some more fun trivia? I hear there's a book called Wicked: The Grimmerie that has all kinds of secrets and tricks within. Anyone have it?