Harold Perrineau was in the role of Lance's sensitive groomsman Julian. Perrineau will always be associated with his role as the wheelchair-bound narrator on the prison series Oz. Since The Best Man, the Brooklyn-raised star has been busy on TV, starring in series from Lost to Sons of Anarchy to The Wedding Band. He also appeared in the high-profile films 28 Weeks Later and Zero Dark Thirty. Most recently, Perrineau starred in the TV drama Constantine.