Fast Food Nation kicks off with a suit-clad fast food chain boss telling one of his executives to investigate a meat packing plant rumored to be allowing fecal matter to infect the beef. But the only thing that's contaminated here is director Richard Linklater's meandering, unfocused movie, which has an unmistakable whiff of Causeitis -- a compulsive inability to avoid taking up any of the many issues in the lefty activist canon.