Josh Duhamel and Julianne Hough turned the German premiere of Safe Haven into a dance party on Sunday (24Feb13) by recruiting fans to do the Harlem Shake routine with them. The actor started the stunt by dancing solo in the middle of a CinemaxX cinema in Berlin's Potsdamer Platz. Moments later, Hough and the rest of the guests in the entire theatre joined in the fun and danced along to Baauer's Harlem Shake hit.