George Clooney and Matt Damon were on the snowy set of The Monuments Men in Berlin, Germany, today. George, who cowrote and is directing the World War II drama, showed his approval while shooting scenes by giving a double thumbs-up to his leading man. Matt and George have been working on the film in Europe since wrapping up award season in February, but have been making time for fun as well. The two reportedly had a snowball fight on the set, and have been hitting the town for dinners and date nights with John Goodman, Bill Murray, and George's girlfriend, Stacy Keibler. Matt also brought his daughters to a German amusement park, where staff commented that he and his family were "impressively easygoing."