PowerPoint tracker pages - empty screen real estate
Tracker pages - they originated in the days of the overhead transparencies. You would take the content page of the document (very detailed bullet points), make a number of copies and draw a red arrow with a pen to the left of each menu item. I don't like tracker pages, it's a sign that either your presentation is too large, or the structure of your story is so unclear that you need a forced framework to remind the audience how many menu items they still have to sit through. "Pause" slides can help though. With a huge font, you cant put up a question, take a break in your story, build up excitement. What to do with the white space in the background. These type of slides are a great opportunity to insert images that do not fit into the presentation story, but offer great additional background. For example, in a company presentation of a consumer goods manufacturer, I used high-quality, page-covering images of typical Israeli supermarkets, bars, cafes, etc. Put a little white line in the background with subject, time and place. Other ideas (all related to company introduction presentations): close-ups of random employees, office locations that give a sense of the city you are located, etc.