Canwest subsequently invested in or acquired other independent TV stations across Canada. Eventually, his station group became known as the "Canwest Global System." In 1997, Canwest bought controlling interest in CKMI-TV, the privately owned CBC affiliate in Quebec City. Canwest then set up CKMI rebroadcasters in Montreal and Sherbrooke. With this move, Canwest's stations now had enough coverage of Canada that on August 18—the day CKMI officially disaffiliated from CBC—Canwest rebranded its station group as "The Global Television Network." Throughout the 1990s, Global (and its antecedents) held Canadian rights to hit U.S. series such as "Cheers", "Friends", and "Frasier".