Room (2015). D: Lenny Abrahamson. DP: Danny Cohen. W: Emma Donoghue. Starring: Brie Larson/Jacob Tremblay/Joan Allen/William H. Macy/Tom McCamus/Sean Bridgers. (NOTE: based on Donoghue’s book of the same name) This year’s Oscar race will be a dense one in the best actress category. Between Saoirse Ronan’s performance in Brooklyn, Cate Blanchett’s performance in Carol, and this performance…