'Downton Abbey': Rare Behind-the-Scenes Look

"Downton Abbey" was the brainchild of a real-life lord and one-time actor Julian Fellowes of West Stafford. "I don't have this indifference to audience that you do sometimes find among the British. That, you know, if you say something is popular it's a sort of insult," he told "Nightline." (ABC News)