ronald colman give an electrify performance a tony john and a broadway actor who can not separate his offstage life from shakespeare othello and the character he play on stage . two important scene illustrate tony dilemma . the first one take place in producer max lasker office . acting be a matter of talent for the practical mind lasker . but donlan and tony friend and disagrees represent no and no . when you do it like tony do it and it much more . the way he have of become someone else every night . so completely . no and do not tell me his whole system isn not affect by it . the other scene occurs in waitress pat kroll apartment . tony tell her his name be martin . she thank him . then he say represent or paul . hamlet . joe . and maybe othello . when tony begin rehearse othello and we learn that though he try to keep his real life separate from his stage life and the part begin to seep into your life and and the battle begin . reality against imagination . he can not keep the two separate represent in his mind pat be desdemona and he othello and and he wrongly believe she have be unfaithful to him . he murder her . colman bravura performance and in a complex and difficult role and earn him 1947 academy award for best actor . oscar nomination go to ruth gordon and garson kanin for best original screenplay . not to be overlook be milton krasner atomspheric cinematography .