It is startling when an actor can embody a living contradiction. Woody Harrelson does exactly that in "Rampart" He manages to give a human center to this creature created by a system that seems to repudiate as well as nurture him. Chilling perfection Mr. Harrelson. Oren Moverman, the writer director is emerging as one o the most pungent of Hollywood writers. His dialog is superb and the opening scene alone is a remarkable confirmation of that. The film has a sticky uncomfortable atmosphere captured in every detail by the underrated Bobby Bukowski's photography. Glimpses of Sigourney Weaver and Steve Buscemi add considerably to the pluses of this unexpected treat.