She's back! In late September the losing California gubernatorial candidate -- and former No. 1 MPW -- was named CEO of HP, America's largest tech company by revenue. While her ascent to the role is a sure sign of her power, it remains to be seen if she can fix the computer maker and bring order to its dysfunctional board.
Boardroom battles and power plays shaped this year's U.S. list, which boasts eight new faces and -- surprise! -- a new No. 1.
