10. Steve White

The West belongs to White, and if he has his way, he’ll make it the best division in the country. For an unbroken 20 months, the West Division has finished No. 1 in Comcast’s power rankings—a measure of multi-department business metrics—and has charted three years of employee-evaluated improvement. One of his greatest pieces of advice comes from a time he ignored his mentor’s guidance on an important issue. “I didn’t listen, and he was right,” says White. Moral of the story: “Seek great mentors and listen to them.”