Some people are helplessly interesting and others are not. Sam Zell might be one of those who’s had to work at it. Someone I know who’s known him socially says he was kind of a bore — always talking business. But he acquired a few billion dollars, put himself in jeans and on a hog, and with his “Zell’s Angels” pals liked to go roaring around places like Sardinia and Abu Dhabi. All this made him a seriously interesting person, especially to other guys — in particular, I suspect, to other guys worth a few billion dollars less who worked for him and liked to imagine themselves in his mold.