Dan Roam Author Dan Roam is the author of the international bestsellers "The Back of the Napkin" (Fast Company, the Times of London, and Amazon’s Innovation Book of the Year) and "Blah Blah Blah: What To Do When Words Don't Work." Dan’s newest book, "Show and Tell: How Everyone Can Make Extraordinary Presentations" was just published by Penguin Portfolio. Dan has helped leaders at Microsoft, Boeing, eBay, Kraft, Gap, IBM, the US Navy, the United States Senate, and the White House solve complex problems with simple pictures. Dan and his whiteboard appear frequently on CNN, MSNBC, ABC, CBS, Fox, and NPR. He lives in San Francisco.