(FORTUNE Small Business) – He's corny, he's maudlin-- and he's everywhere. Ken Blanchard, author of the 1982 smash The One Minute Manager, has sold 15 million copies of his books and has a new one out last month--The Leadership Pill: The Missing Ingredient in Motivating People Today (Free Press, $19.95). But his own books are just the beginning. Take a closer look, and it's hard to find a bestselling business title that Blanchard hasn't been involved with. Here's a quick guide to business publishing's Kevin Bacon. --TOM EHRENFELD