The stuff of legend, you might have read about the hacker Captain Crunch in The Anarchist Cookbook even. Now you can read a brief interview with Mr. John Draper over at ComputerWorld.
Legendary hacker John Draper is known under the alias of Captain Crunch since he used a Captain Crunch cereal whistle to make free phone calls. Draper then built the phone phreaking tool called blue box that made free calls by making phone calls appear to be toll-free 800-number calls. The computer programmer and former phone phreak inspired Steve Jobs and Steve Wozniak who founded Apple Computer.
Definitely falls into the category of Worthwhile Reading. Be sure to also visit the Saving Captain Crunch site.