Something's missing from this one, or maybe it's couple of things.
Jack Black plays goofy loveable Polka King of Pennsylvania Jan Lewan. He is completely certain of his own talent and has an immense drive to make it big. Sadly he isn't that smart, and not enough people love his music, only a group of dedicated elderly fans, so in a desperate act out of what seems like altruism he starts what is essentially a ponzi scheme to help get his musicians paid more and build his empire.
Jack Black is solid, so if you like his schtick or Polka music you may enjoy this, but outside of that it seem... read the rest.