The smartest thing going for this dumdum comedy is that it opens while the real-life jury in the O.J. Simpson murder trial appears to be self-combusting. The dumbest thing going for it is-well, let’s just say Jury Duty stars Pauly Shore, Kato Kaelin’s buddy, as a slacker who barely has the ambition to feed himself, let alone find a job. Called to do his civic duty, he answers the summons for the five bucks a day the gig pays, and hooks up with what he hopes will be the longest trial possible, that of a guy accused of being a serial killer. With Court TV images fresh in our minds, Shore’s antics-strictly, as you know, an acquired taste-take on new amusement: Bored while the judge holds a sidebar conference, for instance, he simply walks up to the bench for a good listen. A little Shore goes an extremely long way, but you may find yourself laughing out of gratitude that it’s not Judge Ito’s courtroom you’re watching. The plot, by the way, is strictly secondary. The jurors, for no particular reason, include Tia Carrere and Stanley Tucci.