If your office is anything like Inc.'s, it's overflowing with business books covering topics ranging from marketing to innovation to customer psychology. To pick the best business books of the year for the entrepreneur, we turned to editor Leigh Buchanan, who writes Inc.'s monthly "Skimmer's Guide" book review; columnist Joel Spolsky, who is CEO and cofounder of Fog Creek Software in New York City; and Todd Sattersten and Jack Covert, the guys behind 800-CEO-READ, an influential blog that tracks new releases (800ceoread.com). Here are their top choices for 2008.