Following in the mainstream success of documentary feature films like “Fahrenheit 9/11” (2004), director Alex Gibney’s scathing look at corporate greed gone wild, “Enron: The Smartest Guys in the Room” (2005), scored a political bulls-eye during a year filled with more than its usual government tumult. Although not a feel-good money-maker like its fellow Academy Award nominated documentary “March of the Penguins” (2005), “Enron” did something else. It repositioned a big microscope over the somewhat forgotten Enron scandal, provoking a renewed outcry against corporate fat-cat greed and a demand