All Best Picture Winners Ranked by Rotten Tomatoes

Every year, the Academy of Motion Picture Arts and Sciences presents a golden statue to the film representing cinema's best.And every year, Rotten Tomatoes revisits every Best Picture winner of Oscars past -- from the classics (Casablanca) to the dubious selections (The Greatest Show on Earth) -- sorting them by the strict and rigorous standards of Tomatometer science. How does this year's winner, Argo, stack up against the competition? How many of the Best Picture winners have you seen? Where do your favorites rank?