How many movies have Kamal Haasan and T. K. S. Natarajan acted in together?

They have worked on 6 movies together! Their first movie together was Maanavan (1970) while their highest rated movie together was Meendum Kokila (1981). They have not worked together since Kadamai Kanniyam Kattupaadu (1987). They are most known for their drama films together.