Age: 51
Occupation: Actor
Previous TIME 100 Appearances: 0
As Jack Donaghy on the sitcom 30 Rock, Baldwin weekly sends up the NBC executives who sign his paychecks (and who themselves have provided some of TV's best unintentional amusement over the past year). His high-rated co-hosting of the Oscars with Steve Martin added to his rep as one of TV's top comic actors.