I'm taking a class this summer on designing and creating mobile lessons, and I really want to wrap my head around iBook Author as part of this. People throw around the "game-changer" label far to liberally when it comes to tech and apps, but I suspect this comes close.
Mostly what I'd like to do is put all my library lesson into mobile format, with something more meaningful than simple a video of my Keynote slides with me doing a voiceover.
We'll see how it goes, and I'll certainly make them available for general use when they're finished!
In the meantim, if you're interested in doing that yourself, the wonderful Apps in Education blog compiled an exhaustive list of iBook Author tutorials. Check them out!