Country Music Television has launched a buzz marketing campaign for its new variety show "Jeff Foxworthy's Big Night Out." The cable network will give away $50,000 for "a big night out" to the mother who delivers America's first baby during the show's premiere, Sept. 1. Another $1,000 will go to whoever identifies her, and $5,000 prizes are reserved for the first mother on each of the 11 subsequent episodes. CMT will link to nearly 4,000 hospital delivery rooms across the nation, via local TV and radio stations, to track the maternity contest. The campaign's costs were less than $1 million.