In The Polka King, Jack Black stars as Jan Lewan, a Polish immigrant who became the “King of Pennsylvania Polka.” A believer in the American Dream, Jan worked hard and dreamed bigger, but with big dreams come big mistakes. Based on a true story, the film, co-written and directed by Maya Forbes and Wally Wolodarsky, mixes comedy and tragedy showing the world’s only known Polka Ponzi scheme. The Polka King co-stars Jenny Slate, Jason Schwartzman, Jacki Weaver, J.B. Smoove and Willie Garson.