In this presentation Hans Rosling makes the case for the washing machine as the greatest invention of the Industrial Revolution. Do not be lulled by Hans Rosling mischief. One of the most persuasive presenters amongst the TED heavyweight, he is potentially the Champion, at least a contender.
If you have any interest in data or statistics at all, do not let this opportunity pass. Share it with your students and the comments immediately offer an extension task for the most gifted.