Today, we're launching an ad contest called "Obama in 30 Seconds." Anyone can make an ad about Obama between now and April 1. The public will vote on the best ads, and a panel of top artists, film professionals, and netroots heroes will pick a winner from among the finalists. Judges include Matt Damon, Ben Affleck, Naomi Wolf, Oliver Stone, John Legend, Donna Edwards, and Markos Moulitsas. We'll air the winning Obama ad nationally, and the winner will receive a gift certificate for $20,000 in video equipment.