Illusionist Derren Brown pushes the boundaries of mentalism

Derren Brown is an English mentalist and illusionist who for more than 20 years has been performing "magic" on stage and television to critical acclaim. His newest work, a one-man Broadway show called "Derren Brown: Secret," began in September. Hari Sreenivasan recently spoke with Brown about pushing the boundaries of mentalism and convincing unwitting participants to take extraordinary actions.