Mega Power Quiz! #1

With this post I’m starting yet another new experimental post series. This time it’s called Mega Power Quiz and it’s a quiz game for my (probably nonexistent?) readers. There might be no one who would be interested to take part in the game but that doesn’t stop me from creating questions! At least for now I don’t have any predefined schedule for new questions and I’ll just post one whenever I happen to come up with something that isn’t too easy to solve with Google. Unfortunately I cannot (at least not yet) offer any prizes for the winners but whoever is the first to post the correct answer in the comment section of this post will get 1 point and the leaders of the scoreboard can call themselves the Mega Power Sages of Indian cinema – how cool is that!

The first question might be an easy one if you’ve seen enough of these movies. The question is:
What is the connection between these twelve movies?

1. Patala Bhairavi (1951)
2. Zabak (1961)
3. Jalte Badan (1973)
4. Shaan (1980)
5. Adavi Donga (1985)
6. Khoon Bari Maang (1988)
7. Yaadein (2001)
8. Ponnar Shankar (2011)
9. Crocodile Love Story (2013)
10. Jagadguru Adi Shankara (2013)
11. I (2015)
12. Uttama Villain (2015)

Hint #1 (added Nov 19, 2015): Thirteenth movie that would qualify to the above list would be the 2015 Tamil fantasy film Puli.