IN CINEMAS MARCH 28. This spring, for the first time in almost a decade, comedy icon Jack Black returns to his role as Po, the world’s most unlikely kung fu master, with a hilarious, butt-kicking new chapter in DreamWorks Animation’s beloved action-comedy franchise. After three death-defying adventures defeating world-class villains with his unmatched courage and mad martial arts skills, Po, the Dragon Warrior, is called upon by destiny to … give it a rest already. More specifically, he’s tapped to become the Spiritual Leader of the Valley of Peace.