I recently read this article on The Wired Campus about the University of Michigan and a new book system being implemented. Basically all books are being digitized and placed into a huge database in which students can print whole books for about $10.
This convergence is a huge improvement in the way books are viewed in the collegiate world. By making books avaiable online for a small amount of money, companies like On Demand Books are allowing people to learn more and be more efficient with their money.