Adobe InDesign Cs5 allows creation of ePub documents with pinch resize images, panorama images, video content. Derby Alumni magazine or Wired are good examples.
Http://live.pigeonhole.sg a great way to add questions to an interactive lesson allowing students to add questions to the lecturer and vote on which questions are e most important.
I took a screenshot of it but as I am writing this on an iPad I cannot upload the screenshot to WordPress as the iPad has NO file management system.
Adobe Presenter. Addition to the toolbar of PowerPoint
http://gohfelix.wordpress.com
Adobe Acrobat 10 creates portfolios of documents including PDF, word. Create PDF online forms. Surveys.
loosersic.wordpress.com 