“Best of” lists are a dime a dozen at this time of year, but only the most discerning cultural critics dare to voyage into “worst of” territory. Conan O’Brien and Team Coco prove themselves up to the task in this roundup of the least viral videos of 2012. No “Gangnam Style” here, moving image fans, but you will find five less than scintillating and refreshingly trendproof gems such as the aptly titled “Reading.” And remember: virality is in the eye of the beholder. Andy Warhol would have taken these over PSY and “KONA 2012″ any day.