“Requiem for a Pretension”? Well, I guess movies about meth and crank in the heartland ought to be ugly as sin, or uglier than “Spun,” and the DV-inflected hallucination-degradation fest “Iowa” (2005) fits both qualifications. Matt Farnsworth wrote, directed and stars—blandly—as the fallen factory worker who turns to dealing. Feats of greed, rape and awful sex are in the mix, too. What was that line Brad Pitt has in “Kalifornia”? Something like “Dog shit, dog shit, porn, porn, stanky, stanky”? “Iowa” reaches those heights, too. With John Savage, Rosanna Arquette, Diane Foster, Michael T. Weiss, David Backus and Amanda Tepe. 104m. (Ray Pride)