One reassuring star: Tim Cook, the chief operating officer who has been able to step in as no. 1 during Jobs' health battles. Cook sits on the board of Nike, where his expertise in global sales and operations is valued. A graduate of Duke University, he's held leadership jobs at companies including Compaq and IBM.
Then there's Jonathan Ive, senior VP of industrial design. Ive was named Designer of the Year by the Design Museum London in 2003 and is regarded as leader of one of the world's best design teams.