” Good Morning America ‘s” Amy Robach caught up with Oscar winners Mahershala Ali , Viola Davis and Emma Stone backstage after Hollywood’s biggest night at the Dolby Theatre in Los Angeles on Sunday. Ali was awarded the first Oscar of the evening, taking home best actor in a supporting role for his part in the film “Moonlight,” which later went on to win best picture after an initial, mistaken announcement of “La La Land” as the big winner.