Honestly I think you hit the nail on the head. It has great rewatchability value (I've seen it a dozen times at this point), but I think most of that is due to Ronald Reagan as the villain and Lee Marvin's cool attitude. The rapport between the killers is just rather dryly funny to me in a way I guess many of Tarantino's films are seen now. Spoiler: The Killers The fatalism of the movie - everyone's screwed up, and everyone must die - is a nicely dark angle, too. It's unpleasant people being unpleasant to each other and then they die. Very entertaining.