The newsroom: we invite it into our homes each day and night, presumably to feel the pulse of the nation, catch a glimpse of the world and often taste a nugget of political sinew. But we stick with a particular channel because it sounds right, and looks good. ABC had the forum set with pizzazz in December 2005. Bob Woodruff stepped into America’s kitchens, bedrooms, libraries, living rooms, hotels and bars worldwide. The new co-anchor face on the evening news was our pulse point to calm and crisis in our world. Then things changed. And when change blasts in, emotions ignite. New acronyms became all too familiar: RPG, HEAT, IED…