Rudy Giuliani Explains Why He Was Hosting AMC's 'Mob Week' (VIDEO)

Before he was elected Mayor of New York City, Rudy Giuliani was a successful federal prosecutor and, as he told Jimmy Fallon on 'Late Night' (Weeknights, 12:37AM on NBC), he was the scourge of the Mafia.

"I prosecuted hundreds of them, and thousands of Sicilian mafia people in the 1980s."

In fact, Giuliani became so familiar with the so-called "Five Families" in New York and their habits, that he's uniquely qualified for yet another career: Mob Tour Guide.

"Anybody want to take a tour," he joked, "I can take you on a Mob Tour of New York City." Now that sounds awesome!