During ET's recent interview with NCIS's Michael Weatherly to talk about the show and his wife's pregnancy, Weatherly revealed
how NCIS has managed to uphold its popularity over the years.
Michael Weatherly Dishes on Directing 'NCIS'
"I think it's time that everyone knows—it's extortion," Weatherly joked. "There's been blackmail. We can't say who we have but we have someone very important to the Nielsen family."