Who Is Your Favorite Celebrity Campaigner? The 2008 presidential campaign inspired a year of political expression and celebrities were no exception. Will.i.am remixed Barack Obama's landmark speech and spoke out at the DNC, Diddy said Sarah Palin "scares him" and Matt Damon called her VP nom a "bad Disney movie." Scarlett Johansson upped the Obama love by saying she was engaged to him. Meanwhile celebs like Heidi and Spencer, Ben Affleck, Brad Pitt, and Halle Berry showed support through quieter efforts and political t-shirts.