The Camdens have a message for those cocky Waltons: "We win!" The WB announced early Friday that 7th Heaven has been picked up for a 10th season, making it the longest-running family drama in television history. (Both The Waltons and Little House on the Prairie ran for nine seasons.) Last month, WB president David Janollari admitted to Ask Ausiello that it was his desire to overtake The Waltons, saying, "That's what we want to do, that's what Aaron Spelling wants to do, that's what the cast wants to do." The only one not on board was poor John-Boy.