British Library Books Online
The British Library has put some of their books online with what they are calling Turn the Pages. The online application allows you to actually turn the pages of selected digitized books, allowing you to see them in their natural state. It also comes with audio commentary that either reads the text for you, as is the case with The Original Alice's Adventures in Wonderland, by Lewis Carol, or offers commentary on the artwork exhibited in the book, as it does with Master Piece of the Renaissance. Check it out!