Slobodan Milosevic enjoyed two short runs as our national wretch: once during the Bosnia war of the early '90s; then again during the 1999 Kosovo conflict. Colombian drug lord Pablo Escobar held the scoundrel title during the late '80s. Abu Nidal topped the charts during his reign of terror. OPEC oil ministers were universally loathed during the early '70s oil crisis. And blind Egyptian cleric Omar Abdul Rahman, who's now doing life in prison, was briefly tagged as our worst enemy after his followers bombed the World Trade Center in 1993 and tried to explode New York bridges and tunnels.