Reginald Joules has transformed the trauma of learning how to ride a bike into a source of excitement, pride and joy. Joules, a management scientist, first came up with his system in 1984, when he had to teach the sport to his five- and seven-year-old children. In 1996, after he taught a group of kids to ride, one mother suggested that he market his ideas -- and Pedal Magic was born. Joules teaches his patented method in a $20 video, and says it only takes two to five minutes and eliminates the need for training wheels. And adults who never learned to ride -- that's approximately one out of every nine grownups -- can practice the techniques in the basement or garage so others won't see their humiliating attempts. But here's a warning: Students weighing more than 200 pounds should complete the remedial lessons first.