What will books actually look like on the iPad?

A couple of weeks before Apple announced the iPad, my wife told me she’d like to have a Kindle. I told her to hang tight, because Apple was likely going to announce a competitive device soon. They did, and we’re now set to pre-order our iPad in a couple of days. But exactly how books will look and behave on the iPad, we’re not completely sure. The gang over at iPadInsider, however, have some video from Penguin that gives us our best idea yet.