The first screen outing for a post-collegiate comedy team calling themselves Broken Lizard, Super Troopers is a spoof knockabout farce concerning clownish highway patrolmen in small-town Vermont. With Brian Cox as the indulgent police chief presiding over the goofy jokes and motorist-baffling stunts, writer-director-star Jay Chandrasekhar’s feature debut is slight but sporadically hilarious.