For an American film starring a Chinese actress in a Japanese role, "Memoirs of a Geisha" picked a tough town for its world premiere. The film version of the best-selling novel of the same title debuted Tuesday in Tokyo to mixed reactions fueled by concerns of cultural authenticity. The film is rife with international credentials, but that global touch has many questioning: Can Chinese actresses accurately portray the subtleties of Japanese culture? Can an American director working from an American novel do justice to a geisha tradition that is largely misunderstood outside of Japan? A.P. reports.