Dave Gray is a consultant, speaker and author who specializes in teaching and promoting visual thinking. His website is full of information about how visuals enhance communicate, especially in the business world. You will find his videos on this site including, The Whirl, The Basics of Visual Thinking, How to know what to draw and How to know when to draw. Check out this information: http://www.davegrayinfo.com/visual-thinking-school/
Visual thinking and communication are critical in the design world and it is exciting to see how it is being used in other areas. Below is an example of Gray’s drawing style. This image represents visually the transformation that his company, XPLANE, had in 2006.