One of the more interesting but highly unknown aspects of being a daily movie reviewer is the phenomenon of "screening rats" or individuals who scramble for giveaway tickets to advance screenings dispensed by local radio stations and businesses theoretically to create word of mouth. Karen Karbo, a sports book ghost writer who pulled a Renata Adler at the Oregonian, called them, "Passholes." Though the screening rats are not unique to Portland, Oregon, within the business it is known that this city's screening rats are among the most pernicious. I stopped going to night time radio tie-in promotional screenings in part to avoid the rats; nearly 30 years of them struck me as enough. They are a particularly angry bunch and travel in packs of 40 or more. In any case, screenings in the last two years have become increasingly disruptive and violent (fist fights have broken out). At this link, Oregonian reviewer Mike Russell discusses on KUFO a recent advance screening of Drag Me to Hell that was especially bad thanks to the rats.