The first trailer for George Clooney's "Monuments Men" played like an "Ocean's 11" prequel (right down to the swinging music cue). This new trailer for the film replaces that suave whimsy for the kind of gravitas normally associated with important Best Picture nominees. "We have been tasked to find and protect art that the Nazis have stolen," Clooney's character says in the trailer. "They tell us, 'Who cares about art?' But they're wrong. It's the exact reason we're fighting. For a culture. For a way of life." Based on the book by Robert M. Edsel, "Monuments Men" is out in theaters on Dec. 18. Watch the new trailer below.