In 2010, he reteamed with director Paul Greengrass, who directed him in the "Bourne Supremacy" and "Bourne Ultimatum", for the action thriller "Green Zone", which flopped commercially and received a score of 53% on Rotten Tomatoes and ambivalent reception from critics. He has appeared as a guest star in an episode of "Arthur", titled "The Making of Arthur", as himself. During season 5 of "30 Rock", he appeared as guest star in the role of Liz Lemon's boyfriend in the episodes "I Do Do", "The Fabian Strategy", "Live Show", and "Double-edged Sword". Damon's 2010 projects included Clint Eastwood's "Hereafter" and the Coen brothers' remake of the 1969 John Wayne-starring Western "True Grit".