"The whole city was crumbling, and then we billige Nike sko elected Ed Koch," Mayor Michael Bloomberg said Friday during a ceremony marking the centennial of Grand Central Terminal, a once-crumbling edifice Koch helped save from the wrecking ball. "When we were down, Ed Koch picked us up. When we Franklin and Marshall Tracksuit were worried, he gave us confidence," Bloomberg said. "When someone needed a good kick in the rear, he gave it to them – and, if you remember, he enjoyed it." The brash, opinionated Koch, who led the city in the late 1970s and `80s with a ECCO Biom combination of determination, chutzpah and humor, died Friday of congestive heart failure at age 88.