The animated characters Beavis and Butt-head visit the Washington Monument in a scene from the 1996 movie, 'Beavis and Butt-head Do America.' The prickly pair became an icon on MTV, which celebrates its 20th birthday with a special telecast from New York's Hammerstein Ballroom Aug. 1, 2001 at 8 p.m., EDT. (AP Photo, ho) HOUCHRON CAPTION (07/30/2001): Beavis and Butt-head, shown in a scene from the 1996 movie, "Beavis and Butt-head Do America," will make an appearance at the MTV birthday party.