Ponthan Mada
Set in 1940s,Ponthan Mada movie is about the irrational bonding of the low-caste Ponthan Mada with his colonial landlord Sheema Thampuran, who was expelled to British India from England during his youth for supporting the Irish Republican Army. Crossing the class boundaries, the two communicate through Thampuran's window, with Mada hanging from a palm tree.
Starring Mammootty, Naseeruddin Shah, Laboni Sarkar, V K Sreeraman, Janardhanan, Maniyanpilla Raju, Lakshmi Krishnamurthy
Watch "Ponthan Mada" on Amazon released in 1994. It's a drama movie, and has a rating of 8 out of 10 from Imdb which is usually fine for this kind of movie, and is currently only available for purchase or rent.