Co-leaders: the power of great partnerships

The case for co-leaders

The two Bobs: sharing the driver's seat

Cyberstars: Ballmer is to Gates what Barrett is to Grove

Winthrop H. Smith: a breed apart

Chou En-lai: the elastic bolshevik

George C. Marshall: selfless leadership

Bernice Pauahi Bishop: a legacy second to none

Anne Sullivan Macy: the miracle worker

Al Gore: hail to the co-chief

Bill Guthridge: invisible but invaluable

Amy Tucker: hoop dreams

Dr. Watson and Sherlock Holmes: fiction's most famous pair

Clash of the titans

Recasting the executive suite

Lessons for co-leaders.