Also part of the weeklong hype around the finales is a vast radio and affiliate TV station watch-and-win promotion that will give away vacations to Hawaii, DVD players, high-def TVs and TiVos. The network hasn't made such noise, which includes a raft of on-air and online hype, since the finale of "Seinfeld." More than 100 radio stations around the country will air the promotions during peak drive-time shows. The contests have proved effective in the past, with about "an 8-to-1 return on investment," says Scot Chastain, NBC's VP-affiliate advertising and promotion services. "We know the shows will do big numbers, but the more we can get people talking about them, it adds more fuel to the fire," Chastain says.