John Lithgow shares biggest worry about playing Albus Dumbledore in Harry Potter TV reboot

John Lithgow reveals biggest worry about starring in Harry PotterJohn Lithgow, who is taking the role of Albus Dumbledore in the new 'Harry Potter' series, opened up about his one fear while signing up for the role.In the new documentary, 'Finding Harry: The Craft Behind the Magic,' for the...