How many movies have Elio e le Storie Tese and Luciana Littizzetto collaborated on?

They have worked on 2 movies together! Their first movie together was Tutti gli uomini del deficiente (1999) while their highest rated movie together was Natale a casa Deejay - A Christmas Carol (2004). They have not worked together since Natale a casa Deejay - A Christmas Carol (2004).