ARNOLD SCHWARZENEGGER

AGE: 60
OCCUPATION: Governator of California
NUMBER OF TIME COVERS: 2 (one with Bloomberg)
PREVIOUS APPEARANCES ON THE TIME 100: 2

PRO: In his second incarnation as Republican centrist maverick, the Austrian-born former action star has surprised critics by passing key state initiatives, shepherding the state through various environmental crises, and reaching across the aisle to blur party lines.

CON: It's not a tumor, but Ahnuld has been under heavy criticism of late for everything from budget cuts to use of his private jet. More important: what will Terminator 4 be without him?