Tina Fey
As a bona fide
triple threat in
comedy terms, Tina Fey writes, stars, and produces the insanely witty NBC comedy series
30 Rock, which revolves around the life of Liz Lemon, a nerdy television writer obsessed with sandwiches ("with extra bread") and Star Wars. And if that isn't impressive enough, Fey was also head writer and a cast member of Saturday Night Live—and wrote the screenplay for the 2004 movie Mean Girls.