How many movies have Rudolf Růžička and Vítězslav Černý acted in together?

They have worked on 2 movies together! Their first movie together was Půlnoční kolona (1973) while their highest rated movie together was How to Drown Dr. Mracek, the Lawyer (1975). They have not worked together since How to Drown Dr. Mracek, the Lawyer (1975).