I liked the first half - a variety of classic robot fiction tropes, Indianized & sometimes modernized. Later half was ok but is too Hollywoodish; near end, it turns into a monster movie, borrowing a lot of monster imagery from Hollywood.
Story summary.
Dr Vasi has created a hominid robot, Chitti, targeted eventually for battle role in military. We see a variety of bugs in its software, as well has some funny & lovable scenes, as he's introduced into human society: ask him to hit you, & he will; his lack of human mores (saves a woman from fire - only she was in bathroom & it didn't occur to him to cover her before depositing her among the crowds). He'll eventually be given the emotional ability, & will quickly fall in love with his creator's girlfriend!
That's first half. Second half is Chitti's transformation into a monster when evil Dr Vohra introduces malicious code into his software. This point on, it's a variety of visual effects borrowed from multiple Hollywood movies.
Fact sheet.
Released: Setember
2010.
Director: S Shankar.
Cast:
Aishwarya Rai (Vasi's girlfriend);
Rajnikanth (Dr Vasi, Chitti, & many other robots & monsters in later half);
Danny (Dr Vohra).
This post is based on Hindi version of the movie.