Well this is pretty darned charming.
William Joyce's The Fantastic Flying Books of Mr. Morris Lessmore is available as an iPad app.
I particularly love the whole Buster Keaton vibe. You can download the original short film here
You can read more about the app from Moonbot Studios in this write-up in The Atlantic. And you can read about further William Joyce fabulousness in this earlier post on the title credits he created for Mr. Magorium's Wonder Emporium.