OCCUPATION: Actress, comedian, writer
PREVIOUS APPEARANCES ON THE TIME 100: 1
PRO: With the aid of a prop flute, an oversize wig and some flattened vowels she already had the glasses and cheekbones Fey became Palin, delivering Saturday Night Live its highest ratings in years. She also fared well at her day job on 30 Rock, earning a Golden Globe, a SAG award and a Pacific Rim Emmy.
CON: They might help the ratings, but 30 Rock's guest-star turns no longer feel very special.