Todd Bradley

One in every five PCs sold today is made by Hewlett-Packard, and that's largely thanks to Todd Bradley. He was CEO Mark Hurd's first major hire when Hurd took the reins from Carly Fiorina in 2005. Within a year, Bradley, 49, launched the celebrity-packed "The computer is personal again" ad campaign, recruited designers like Vivienne Tam, and outsold Dell to become the largest PC maker. Under his leadership, HP's $42 billion personal systems group, which also includes mobile devices, workstations, and Internet services, has increased profitability by 300%. [+]