Ventriloquism is polarizing. People think it's corny but it also sells more tickets than any other form of comedy. Professor Sarah Kessler from USC's Annenberg School of Communications has spent her life studying the art form and the philosophy behind it. Our conversation spans from the Oracle at Delphi to Jeff Dunham. With Comedic guests: Max Silvestri, Annie Lederman, and Kaseem Bentley.