Joshua Jackson looked serious today on the New Orleans set of Lay the Favorite. The Fringe star is acting alongside Catherine Zeta-Jones, Rebecca Hall, Bruce Willis and Vince Vaughn in the movie, which is based on the memoirs of a gambling addict. Joshua headed South to shoot following a trip to the Cannes Film Festival with his longtime girlfriend Diane Kruger last week. The pair made a cute couple at the red-carpet premiere of Sleeping Beauty before Josh headed back to the states and his latest big-screen role. It's been a month full of travel for the pair. He and Diane made the scene on the French Riviera after a quick trip to Turkey and a stop at the Met Gala in NYC, where she sported a leg-baring Jason Wu design.