I'm a designer, developer, and author specializing in mobile user experience. I'm author of the O'Reilly books Tapworthy: Designing Great iPhone Apps and Best iPhone Apps: The Guide for Discriminating Downloaders. My outfit Global Moxie offers workshops and consulting services to help creative companies build tapworthy iPhone apps and effective websites.

Before the interwebs swallowed me up, I worked on a slew of national PBS programs at Boston's WGBH. I shared my three words of Russian with Mikhail Gorbachev, strolled the ranch with Nancy Reagan, hobnobbed with Rockefellers, and wrote trivia questions for a primetime game show. In 1996, I created the uberpopular "Couch-to-5K" (C25K) running program, which has helped millions of skeptical would-be exercisers take up jogging.