Shakespeare never thought to instruct the actors to get bare assed in the first scene of this dark comedy of love and revenge. Director Kenneth Branagh, the Irish firebrand who brought film audiences back to the Bard in the thrilling Henry V, rectifies that oversight. Everyone is dressing to welcome Don Pedro (Denzel Washington) and his lords, Benedick (Branagh) and Claudio (Robert Sean Leonard), home to Italy after a victorious battle. In interviews, Branagh has said he wanted something "sexy,…