This 1 minute promotional video for comic books presented by the Madefire application for iPad is pretty cool. It's a nice iteration on digital storytelling. From their 'About' page:
Madefire is undertaking an epic journey [...] that we believe will revolutionize how stories are told, read, and shared. One that will transform a once static medium into an interactive iPad experience that unfolds dynamically on-screen, and evolves with each new episode. It’s our proprietary Motion Book Tool that will make all this possible.
What's really cool is that they offer access to their tool (beta sign up at this stage), which will allow artists to generate these animated eBooks themselves.
Definitely worth checking out here: http://www.madefire.com/