• Filmmaker K Balachander, after being impressed by Mohan’s play, offered him the chance to write dialogues for Poikkal Kudhirai , which was based on the play Marriage Made in Saloon
  • Known for his frequent collaboration with Kamal Haasan, Mohan wrote dialogues for cult movies such as Michael Madhana Kama Rajan, Apoorva Sagotharargal, Sathi Leelavathi, Avvai Shanmugi, and Panchathanthiram to mention a few. Vasool Raja MBBS was the last film that Kamal and Mohan worked together.
  • In addition to writing screenplays and dialogues, Mohan also played cameo roles in films such as Indian , Arunachalam , Pammal K Sambandam and Naan E .