It clocks in at over three hours, but Peter Jackson’s remake of the 1933 classic is gripping nonetheless. The film rethinks the characters, turning the original’s stark Jungian fantasy into a soulless but skillful set of kinetic and emotional effects. Carl Denham (Jack Black)originally a self-portrait of codirector Merian C. Cooperis now a comic villain personifying, and thereby displacing, the movie’s own cynical contrivances and hypocritical exploitation. Ann Darrow (Naomi Watts) has lost most of her hysteria and gained an Electra complex; the putative hero (Adrien Brody) is now, improbably, a playwright; a black sailor (Evan Parke) has been added to offset the jungle stereotypes; and Kong is anthropomorphized to the point of becoming first an audience stand-in (for whom Watts performs a few vaudeville turns), then a Christ figure. PG-13, 187 min. (JR)