Forget about Bruce Springsteen the iconic rock star. Forget about the Bruce Springsteen the winner of countless Grammy Awards, an Oscar and, as of last week, a Presidential Medal of Freedom. And forget about Bruce Springsteen the harmonica-slinging folk hero who channels Woody Guthrie. Because the man who appeared at the Tattered Cover Book Store on Wednesday was Bruce Springsteen, the author whose writing — not his guitar — does the all the talking. Of course, the roughly 1,200 fans who stood in a blocks-long line outside the East Colfax Avenue store to pick up their signed copies of “Born to Run” and get a photo snapped with Springsteen have not forgotten any iteration of the man known as the Boss. “He talks to all of us. He carries so much energy and passes it on to people.