Ullaasam

D.–Jerry">J. D.–Jerry and produced by Amitabh Bachchan. The film stars Ajith Kumar, Vikram and Maheswari with Raghuvaran, S. P. Balasubrahmanyam and Srividya in other pivotal roles. It was released on 23 May 1997 to mixed reviews.

Ullaasam
Theatrical release poster
Directed by	J. D.–Jerry
Written by	Balakumaran (Dialogues)
Screenplay by	J. D.–Jerry
Story by	J. D.–Jerry
Produced by	Amitabh Bachchan
Starring	Ajith Kumar Vikram Maheswari
Cinematography	Jeeva
Edited by	B. Lenin V. T. Vijayan
Music by	Karthik Raja
Production company	Amitabh Bachchan Corporation
Release date	23 May 1997 (1997-05-23)
Running time	136 minutes
Country	India
Language	Tamil

Arms trafficking crime boss J. K. is Dev's father. Bus driver Thangaiah is Dev's neighbor and father of Guru. In his childhood days, Guru was attracted by J. K.'s activities and follows his footsteps. While Thangaiah tries to convince his son, it is all in vain. He became vexed and started to raise Dev (J. K.'s son), as a good man. In their college days, Dev becomes a singer. With the "lover boy" image, he is really popular among the woman in the college. While Guru studying in the same college becomes a dancer and turns out to be a local dada, who helps J. K. in his business. Both Guru and Dev fall in love with the same girl, Megha, who is in love with Guru.

Thangaiah realises Dev's love for her and begs Guru to leave his love for Dev, since he won't be able to lead a peaceful life in the shape he is. Despite Guru having thoughts of leaving Megha. Dev steps aside knowing that Megha is in love with Guru. As Dev hides his feelings for Megha. He wishes the both of them by saying, that the love they have for each other will prevail. The film ends with Guru's choosing to stay with the dark world and with Megha, by his side.

The film became Amitabh Bachchan's first Tamil film production under his banner, Amitabh Bachchan Corporation and as a result, he chose to select several leading actors for the project. Ajith Kumar signed on after the success of Kadhal Kottai (1996), whilst Maheswari, the cousin of actress Sridevi, was signed after enjoying success in Telugu films. The makers initially tried to cast Arun Vijay in a parallel lead role, but his reluctance to work on dual hero films meant that Vikram was signed. Moreover, the film boasted of a strong supporting cast of Raghuvaran, S. P. Balasubrahmanyam and Srividya, whilst Jeeva as cinematographer and Raju Sundaram as choreographer were also amongst the most prolific options in the Tamil film industry at their respective occupations. The director duo J. D.–Jerry were signed on after Amitabh Bachchan Corporation Limited had been a part of the marketing team in some of the serial episodes they had directed. Abdullah, actress Khushbu's brother, and Roshini, actress Nagma's sister, were also reported to be a part of the initial cast but eventually did not feature. The film was briefly delayed due to the FEFSI strike of 1997. Furthermore, during production Ajith suffered due to the dancing and fighting involved which caused problems for his back, leading to a further round of corrective surgery.

The soundtrack was composed by Karthik Raja, with actor Kamal Haasan also singing a song in the album. The song "Cho Larey" was based on the 1977 Peruvian song "La Colegiala", and was shot in Switzerland. The song "Veesum Kaatrukku" was well received upon release.

Ullaasam was released on 23 May 1997, and received mixed reviews. R. P. R. of Kalki called the film's screenplay as Pallavan bus which goes in a speed then faces sudden breakdown often. K. N. Vijiyan of New Straits Times appreciated the film's "moral arguments" and added, "There are a lot of shooting scenes, which are shown in slow motion, so violence does not really dominate what is essentially a love story". However, he criticised Vikram's inconsistent characterisation, initially as a "soft character" and later as a "Bruce Willis"-like figure who shows proficiency in firearms despite never having touched one before.

The film became a financial failure at the box office, and became one of the five consecutive failure films by Ajith in 1997. Post-release, Vikram acknowledged the film for expanding his female fan base as a result of the soft-personality of his character. Talking about the theatrical run of the film, the directors felt that "overkill" of the subject may have turned audiences away, and stated the youth-centric feel was similar to two earlier releases during the same period, Kadhal Desam (1996) and Minsara Kanavu (1997).

In October 2019, J. D.–Jerry expressed an interest in remaking the film with Vikram Prabhu in Ajith's role and Dulquer Salmaan in Vikram's role, with Pattukkottai Prabakar also working on an early draft for the new version.