We are experimenting with something we've wanted for years, online PowerPoint Presenations. These two pages contain Bob Cozzi's Regular Expression presentation from Cozzi's RPG World Conferences.
To view them, just click the Next link or go directly to page 1 or 2 (in the index to the right). You can then page within the PowerPoint presentation itself by clicking on the >> button at the bottom of the PowerPoint viewer/slide. Note that you can make the PowerPoint presentation full-screen by clicking the little box on the bottomer right side of the PowerPoint viewer.
NOTE: Occassionally the Microsoft PowerPoint (office 365) server is unresponsive. Pressing Refresh (F5) to reload the page often corrects the issue.