Skinner (left), Campbell (right)
Readers' picks
1. Jim Skinner, McDonald's
2. Jim Sinegal, Costco and Sam Palmisano, IBM [tie]
Experts' pick
Bill Campbell, Intuit
The experts and Fortune agree: Campbell is an ace. "To this day, I still utilize his lessons," says tech investor Gideon Yu.
NEXT: Position: Strategist