This year the legendary investor created political buzz by arguing that plutocrats should pay higher taxes. The Obama administration, co-opting the idea, included a "Buffett Rule" in
its budget proposal, under which people who make more than $1 million a year would pay at least the same percentage of their income as middle-class Americans. On the investing
front, Buffett moved into tech, buying $10.7 billion in IBM shares -- 5.5% of the company. Despite an insider trading scandal involving a subordinate, Buffett maintained his
larger-than-life role in business.