How many movies have Kamal Haasan and R. Bhaskaran collaborated on?

They have worked on 4 movies together! Their first movie together was Uyarnthavargal (1977) while their highest rated movie together was Unnal Mudiyum Thambi (1988). They have not worked together since Unnal Mudiyum Thambi (1988). They are most known for their drama films together.