The easiest way to describe Vook is that it takes books and reconfigures them for the digital age. Instead of being just static words and images, Vook combines the written word with videos. They’ve just launched with a handful of titles (four to be precise) and they cost about $7. Less, if you buy one for the iPhone, etc.
The NY Times has a largish story on the new venture. My only gripe is that for a supposedly tech savvy company, it baffles me they have no easily embedded videos to give consumers a better feel for what they do.