First Indian film for Mary E. Vogt, the costume designer for the Men in Black series and also for Woo-ping Yuen, action choreographer in the Matrix and Kill Bill sequels.
During the song sequence of Kadhal Anukkal, the light reflectors and the crew are visible through the reflections that come from Rajini's sun glasses in many shots, especially in the shot at the beginning of the song where Rajini sits with the guitar in his hand.
After the initial demonstration and charging, when Dr Vaseegaran transfers data (before Aishwarya drops at the Lab) the monitor shows "Nueral Schema" instead of "Neural Schema" - a spelling mistake in "Neural".