Primer, a decidedly low-budget sci-fi thriller, has won the top dramatic prize at the Sundance Festival. The film, directed by Shane Carruth with a miniscule budget of $7000, is about two men who invent a time machine. The award for best documentary went to Dig!, which follows the frontmen of two cult bands embroiled in a bitter rivalry. “Morgan Spurlock, who spent 30 days eating only food from McDonald’s and then chronicled its impact on his body in Super Size Me, earned the directing award for his efforts.”