I would recommend watching the real TED talk of Arunachalam Muruganantham after the movie.
There you have it, those are some of my favoutie picks. Some other mention-able movies are:
- Sui Dhaaga
- Lust Stories
I didn't watch Raazi, only because I didn't want to watch a movie that may have anti-Pakistan nuances in it. Another movie I didn't watch was Padmavat, only because I didn't like the way they portrayed Alauddin Khilji (based on the trailers).
Hope you have a chance to watch some of these movies. Do let us know if there are some more we should add to the list!