I generally am not a big fan of movies (there is enough drama in real life), but I have seen a few good movies over the last few decades that are etched in my heart. I am only going to list Tamil movies here, since those are the ones that I can really relate to and keep going back to. 

1. Sillu Karuppatti https://www.thehindu.com/entertainment/reviews/sillu-karupatti-movie-review-life-is-like-a-box-of-chocolates/article30410499.ece
Absolutely love this movie. Lost count of how many times I went back and watched my favourite scenes.

2. K.D. alias Karuppudurai https://www.thehindu.com/entertainment/reviews/kd-engira-karuppudurai-review-the-heartfelt-storyline-and-perfect-casting-leave-a-smile-on-your-face/article30051232.ece
Deals with the horrific practice of senicide. However, the movie itself is delightful to watch. A delightful movie about a dark subject.

3. Thavamai thavamirundhu https://en.wikipedia.org/wiki/Thavamai_Thavamirundhu  I was struggling to control my tears watching the movie. All men who provide for their families can relate to this movie well.

4. Mahanadhi https://en.wikipedia.org/wiki/Mahanadhi_(film) Anybody who watches this movie without crying is not a human being. You have been warned. Kamalahassan at his finest, with a brilliant background score by Ilayaraaja. 

5. Thanneer Thanner https://en.wikipedia.org/wiki/Thanneer_Thanneer
This film exposes the rotten political system and bureaucracy in India and the struggles of villagers for bringing water supply to their village.