Despite a shuffling of executive management, Tim Cook's first full-year as CEO was chock-full of milestones: Apple's(AAPL, Fortune 500) stock soared to an all-time high of $705.07 per share, and its latest iPhone sold more than 5 million units during its first weekend on sale -- a company record. --JM
He's a pro-customer, tightfisted risk-taker who is conditioning Wall Street to embrace his erratic earnings. If you're running a business with high margins - watch out.