Enthiran (2010)

Enthiran is a 2010 Indian Tamil science fiction techno thriller, co-written and directed by Shankar. The film features Rajinikanth in dual roles, as a scientist and an andro humanoid robot, alongside Aishwarya Rai while Danny Denzongpa, Santhanam, Karunas, Kalabhavan Mani, Devadarshini, and Cochin Haneefa play supporting roles. The film's story revolves around the scientist's struggle to control his creation, the android robot whose software was upgraded to give it the ability to comprehend and generate human emotions. The plan backfires as the robot falls in love with the scientist's fiancée and is further manipulated to bring destruction to the world when it lands in the hands of a rival scientist.

More at Wikipedia.