Mukbang: Watch what they eat!

In the hallowed halls of food fads, what in the world could be weirder than mukbang? A Korean term, mukbang refers to YouTube videos of people eating, and talking about their meal – and millions of people are hungrily watching. David Pogue talks with mukbang celebrity Bethany Gaskin, whose videos on Youtube have gained more than 2.3 million subscribers.