Wicked. My wife and I were going to see the play with a couple of friend and figured we should take the same approach we do with movies based on books: read them first so we aren't lost because of stuff cut out due to editing. We got the audio book to listen to on a longer road trip we were going on.
Holy crap what a steaming pile of bizarre idiocy that was. Imagine some nut job political activist reading the Wizard of Oz, then taking a really bad acid trip.
On the other hand the play was absolutely brilliant and I highly recommend it...