Jack Black talks about 'The Polka King' (and leads a polka performance!)

Currently starring in “Jumanji: Welcome to the Jungle,” Jack Black plays a polka band leader who ran a Ponzi scheme in the new Netflix film “The Polka King,” which is based on a real-life story. Live in the TODAY studio (and in character!), he leads a spirited performance: “Everybody Polka”!