Dark Brown. Her mother . Khandi's age is 63. Dave Nelson is as neurotic as anyone else working at WNYX, often driven to ruin by his obsessions, be they coffee, a 1980s arcade game, or Bill's chewing. Khandi Alexander, a series regular who left in Season 4, returns as Bill's old foil Catherine Duke. Whatever Happened To The Cast Of NewsRadio? Search Sitcoms Online: