Jon Hamm and his costar, Vincent Kartheiser, got into character for Mad Men in LA yesterday. The duo is back on set after an exciting weekend at the Emmys. Mad Men won best drama series for the fourth time in a row, and the cast took the stage to accept their statues. They were missing leading lady January Jones, though. She gave birth to her first child, Xander, this month, and spent the award night at home with her new baby. Jon's been taking care of things away from work as well and was seen house hunting with girlfriend Jennifer Westfeldt a few days ago.