** FILE ** Then-New York City Mayor Rudolph Giuliani laughs as he finishes his final radio show at his City Hall office in New York in this Dec. 28, 2001 file photo. As mayor, Giuliani imposed civility on New York, not on himself. "Get off the phone, you crazy nut," Giuliani barked at a caller on his weekly radio show. In the 1990s, Giuliani clearly relished the opportunity to spar, now as a presidential candidate, he seems to be showing a gentler side. With Multimedia interactive.. (AP Photo/Beth A. Keiser, File)