“I, Tonya” (***1/2 out of four) was a sweeping biographical drama about Tonya Harding (Margot Robbie) showing her redneck upbringing with an abusive and domineering mother (Allison Janney) who nurtured her fierce and competitive spirit which led her to ice-skating in the Olympics and one of the most historic and controversial sports events of all time when she allegedly had her opponent Nancy Kerrigan assaulted. Director Craig Gillespie easily does his most dazzling work ever using in-your-face Scorcesean style of mock-interviews, humor, and great soundtrack detail. Robbie is sensational in the lead role but Janney is even better in a melting, Oscar-worthy performance as her mom. Bullseye!