Oh, that extra “x”. If you are using Microsoft Office 2007, you’ve probably noticed that the file extensions have changed from “.doc, .xls, and .ppt” to “.docx, .xlsx, and .pptx”. If you’re using an older version of Office, you have definitely noticed the change because you can’t open these files. Fear
Skilled lecturers know that having humor in their presentations can help to engage the audience and to provide feedback on whether they’re listening. These guys take the concept to an entirely different level. Tim Lee, Scientist turned comedian: Don McMillan, Life after death by PowerPoint: Doug Zongker, Chicken chicken chicken: More PowerPoint