Michael Lewis is one of my favorite writers. Moneyball is in my all-time top 5 because of the brilliance with which he describes the statistical model the A's use and because of the personal stories intertwined with the stats. I loved that book and it changed the way I thought about a lot of things, like pharmaceutical drug development, for instance.
Lewis writes a column for Bloomberg (too infrequently for my tastes) and he covers Goldman Sachs' reaction to the credit bubble. A few smart traders made the firm billions, with a "b", instead of losing billions like the rest of Wall Street. Cool stuff and well and entertainingly explained by Lewis.