Live from New York ... it's Tina Fey as Gov. Sarah Palin. After wild conjecture over whom would play Sen. John McCain's running mate on "Saturday Night Live," Fey returned to her old show for an opening sketch featuring her and Fey's former "Weekend Update" co-host Amy Poehler as Sen. Hillary Clinton. The NBC comedy show's season premiere opened Saturday with a "nonpartisan message" where the two pleaded for an end to sexism in the presidential campaigns — which have seen Palin enjoy sudden popularity after Clinton's loss to Sen. Barack Obama for the Democratic nomination.