Well, at least some good came out of The Monuments Men . While filming his poorly-received World War II drama last year, George Clooney became close buddies with co-star Hugh Bonneville, best known on these shores as the eternally grouchy patriarch of the unruly Crawley clan on Downton Abbey . And since the former Batman is always quick to respond when a friend is in need, Clooney didn’t hesitate when Bonneville asked him to participate in a one-off short charity film starring the Downton Abbey players. A teaser clip for the short has just hit the web, and it’s the most swoon-inducing Downton moment since Matthew proposed to Mary… for the second time.