Three-dimensional images, or anaglyphs, can provide useful information as to height relationships between components of an image. They can also enliven presentations before diverse groups. Imagine a boardroom full of executives having their 5th straight meeting of the day. You are there to present preliminary research information that could lead to a major contract. After requesting that everyone to put on red/blue glasses (not exactly the height of fashion), you proceed to show stereo images of hair samples with obviously different degrees of roughness. Correlation is drawn between the different samples and the nutritional components of the dietary supplement being tested. A picture not only saves a lot of words. It also leaves a lasting image in the minds of the observers that could easily translate into $$$. Besides, it's fun to look at neat 3-D images!