Discovery Kids has signed up Ben Stiller, famed for roles in feature films There's Something About Mary and Meet The Parents, to narrate the new series Prehistoric Planet, based on the hugely popular Walking with Dinosaurs, which Discovery co-produced with the BBC.

The series will debut in October on NBC's Saturday morning block of programming. Marjorie Kaplan, Senior VP and General Manager of Discovery Kids, said: "The only thing better than bringing dinosaurs back to life for a kid audience is having Ben Stiller lead the way," before continuing with the somewhat mind-boggling statement: "He is a hugely talented superstar who we think is every bit as big as T-Rex, and a whole lot funnier."