Time sure flies when you're making nice money. It was one year ago that Warren Buffett made a $5 billion investment in Goldman Sachs preferred stock (what many described as a bailout). The deal gave Buffett - through Berkshire Hathaway - a 10 percent annual dividend on the preferred plus the right to buy $5 billion worth of common stock at $115 a share. With Goldman trading today at about $186, his warrants are now valued at more than $3 billion. That's a 62 percent one-year return, though it's still a paper gain because Buffett isn't about to exercise his option to buy at $115. He's never been a take-it-and-run kind of guy, which is one reason we find him so endearing. Kind of the anti-Gordon Gekko.(CNBC)