Now this is a fine merger of copyrighted materials and the web. Lookybook lets you flip through picture books on-line. From their about:
Picture books are for looking at. Lookybook allows you to look at picture books in their entirety—from cover to cover, at your own pace. We know that nothing will replace the magic of reading a book with your child at bedtime, but we aim to replace the overwhelming and frustrating process of finding the right books for parents and their kids.
Looky: