FlipSnack is a free online flipping book software that allows you to convert PDF documents into Flash page flip digital publications. It's the ideal solution for those who wish to embed a book, magazine, catalog, newspaper, portfolio or any other kind of document into a website or blog.
As William Chamberlain and I dm's on Twitter, I asked if he was "flipped" and he penned this answer on his blog. It is insightful in that many teachers incorporate elements of delivering instruction via blog or feed without having kids with net access at home.
For those who are flipping or in flipping their classroom, here are some awesome video interaction tools. Don't just SHOW a video, have students interact with it. So many ideas here. Hat tip Jon Bergmann in a conversation he and I were having.