The officers from Central Board of Film Certification (Censor Board) had personally congratulated the director Shankar for making a bold movie that speaks to the society in a grand way.

Main inspiration for the movie was from Sidney Sheldon's famous novel 'Tell Me Your Dreams'.

The first Indian movie to be dubbed into French. Columbia Tristar bought the dubbing rights for broadcast in French-speaking nations.

About 200 (approx) still-cameras was used to create "bullet-time" effect in particular fight scene.

Vikram described his role in Anniyan as the most difficult one of his career.

This is the first movie directed by Shankar to not have music by A.R.Rahman.

Imported fighters as well as martial artists from all over the state were used in the multi-opponent fight scene.

The film's highlight is the Thiruvaiyaar music festival. Well known exponents like Kunnakudi R Vaidhyanathan, Sudha Raghunathan and Unnikrishnan appear in the scene, which is a recreation of the real festival.

This movie also borrows a story to Brad Pitt's movie "Se7en", which has a similar plot of serial killer punishing habitual sinners

Yana Gupta: The famous Czech-Indian model makes a cameo appearance in a song.