What do Albert Einstein, Justin Timberlake and Sir Richard Branson have in common? Incredibly talented? Extremely famous? Cultural game-changers?Yes to all. And...they all have (or, with Einstein, had) ADHD.Attention Deficit Hyperactivity Disorder. Not so long ago we only associated the condition with wild children running rampant through classrooms and department stores, disrupting the lives of everyone within range - Dennis the Menace, a whirling...