The British Library in London has this nifty interactive display. You can select a book, "leaf" through its pages, use a zoom feature to create a floating "magnifying glass" window, get transcriptions/translations of the text, and listen to audio readings of the text or explanations. Lots of fun to use! The interface is simple and intuitive, giving a "book-reading" feel to the interaction. It's rich in information as well, making it an effective educational tool.