Having already reviewed some of the oddest public gatherings imaginable-from road kill cook-offs to pumpkin-hurling contests-this Smithsonian Channel series heads to Sturgis, South Dakota, for a look at the biggest motorcycle rally in the U.S. Get ready to go hog wild"over the onslaught of tattoos, custom rides, leather jackets and fun! 2009/color/67 min/NR/fullscreen.