Raging Bull) is a 1980 Indian Tamil-language action film directed by S. P. Muthuraman, and written by Panchu Arunachalam.

To stop the wedding, Sundaravelu, at the instigation of Saamipillai, sends his henchman Sangili, who previously killed Kannamma's father, to fight Kaalaiyan.

Kaalaiyan is again framed for murder by Sundaravelu, the police intensify their search and a team of officers reach the forest.

When he demands witnesses and proof for his crimes, Saamipillai comes forward and agrees to give all the evidence, revealing his identity.

Rajinikanth, who had a long-time desire to appear in an AVM film, readily agreed when approached by Muthuraman.

[9] Murattu Kaalai was the first film where Jaishankar, who was generally known for his heroic roles, portrayed a negative character.

[11][12] Rajinikanth wanted Jaishankar to get equal prominence in all the film's promotional material, and it happened that way.

[13][14] Y. G. Mahendran, Rasappa, Ramu and Arjunan were chosen to portray Rajinikanth's younger brothers.

[3][16] The makers chose to shoot the film in Pollachi as it had all that the script required: fields, forests, hills and rivers.

[20] Congress Leader Udayappa's family who lived in Paganeri helped the crew with resources and arranged the event.

[18][22] According to Saravanan, the train fight scene was inspired by a Chinese film which was given by sons of Nalli Kuppuswami Chetti.

[25][26] The climax initially had the antagonist beaten and dragged by the police, but Rajinikanth could not bear to see Jaishankar in such a position; it was changed to have the character commit suicide to avoid arrest.

[30] "Pothuvaaga En Manasu Thangam" became immensely popular among fans of Rajinikanth,[31] and featured prominently in the 1996 Tamil Nadu Legislative Assembly election.

[32] The review board of the magazine Ananda Vikatan gave the film a B rating (equal to 40 or 45 marks out of 100), calling it a mass commercial entertainer.

[34] Murattu Kaalai popularised the trend of introduction songs which went on to become a trademark in Rajinikanth's films.

[45] R. S. Prakash of Bangalore Mirror compared Veeram (2014) to Murattu Kaalai because of how it depicted the male lead's relationship with his four younger brothers.

[47] In Muthu (1995), the title character (Rajinikanth) is seen performing "Podhuvaga En Manasu" on stage.

[48][47] In Subramaniapuram (2008), Azhagar (Jai) and Paraman (Sasikumar) are seen watching Murattu Kaalai at a theatre.

[49][50] In Enthiran (2010), Pachaimuthu (Kalabhavan Mani) utters the dialogue "Seeviduven" while threatening Vaseegaran (Rajinikanth).