Tina Fey is the hardest-working woman in show business, creating and starring in NBC's hit sitcom 30 Rock and starring with Steve Carell in Date Night, which is far smarter and more grown-up than most studio comedies these days. Fey's no fool: to boost the movie's opening weekend, she returned to SNL to rechannel Sarah Palin, who is, conveniently, back in the news. Fey announced the "all Sarah Palin all the time" "Sarah Palin Network," with such new series as "Todd!" and "Hey Journalist, I Gotcha!":

And here's Weekend Update: