Some of the best business books I've read recently:

	Clayton Christenson, The Innovator's Dilemma.  Clay is a truly brilliant guy (he was one of my favorite profs in b-school), and his book on why well-managed companies can miss market shifts is extremely insightful.
	Geoffrey Moore, The Gorilla Game and Inside the Tornado.  Two good articulations of how the technology market works, emphasizing the importance of leading position during the early rapid market penetration cycle.
	Adam Brandenburger, Coopetition.  Adam applies game theory to technology strategy, for a truly thoughtful book (Adam is another of my favorite b-school profs.)
	Anthony and Michael Perkins, The Internet Bubble.  The two founding editors of the Red Herring clearly articulate the causes of the great internet bubble of 1998-2000. The original version came out in 1999, in the middle of the bubble, and soberly pointed out that the then-current market hysteria had no rational foundation.  The revised edition came out in 2001, and adds some more historical context after their original position was proven true.
	Jim Collins, Good to Great.  The author of Built to Last answers the question "can mediocre companies become great" by looking at companies that made just that transition. He takes a strong data driven/research approach, and comes up with a truly insightful book. You'll never think about hedgehogs the same way again after you read this book.