WASHINGTON (AP) - Plenty of people and politicians have skeletons in their closets. In the case of presidential candidate Rudolph Giuliani, that closet is a walk-in. The former Republican mayor of New York City won widespread praise for his handling of the Sept. 11 attacks, and it is largely that collective memory that accounts for his current popularity in polls and makes him the early front-runner for his party's nomination. Yet as most New Yorkers could tell you, there are plenty of episodes in Giuliani's past that could come back to haunt him - scenes that played like a booming,...