Google Docs Presentation - Jefferson to Jackson
You may disagree with what I have put in this PowerPoint (or presentation as Google Docs calls it), but if you have never used it, you can see the power of always having your PowerPoint online. I give my students the url and then if I make a change, I never have to worry about uploading it again to Blackboard (which my county uses). The best thing is that you can easily insert videos from youtube and links.