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Madison Arnold (born February 7, 1936 in Allentown, Pennsylvania) is an American actor and voice actor who has appeared in television shows such as T.J. Hooker, Unforgettable, Mercy, Sidekicks, The Rockford Files, Law & Order: Special Victims Unit, Ed, Hill Street Blues, Police Story, 30 Rock, Saturday Night Live, Mannix, Law & Order, Robert Kennedy & His Times, New York Undercover, CSI: Miami, Kenny the Shark and Gimme a Break!. He provided the voice of Gambetti Family Don Jon Gravelli in Grand Theft Auto IV.