Paramasivan

Paramasivan is a 2006 Indian, Tamil-language action film directed by P. Vasu and produced by S. Ramesh Babu. The film features Ajith Kumar in the lead role with Laila, Vivek, Prakash Raj and Jayaram playing other pivotal roles.
It was released on 14 January 2006 to mixed reviews.

Ji is a 2005 Tamil action film directed by Linguswamy and produced by S. S. Chakravarthy. The film stars Ajith Kumar and Trisha Krishnan in the lead roles, while the score and soundtrack are composed by Vidyasagar. The film was released in February 2005 following a series of delays and received mixed reviews.

Villain

Villan is a 2002 Tamil film directed by K. S. Ravikumar and produced by S. S. Chakravarthy. The film stars Ajith Kumar in a dual role while Meena and Kiran play female leads. Sujatha, Fesi Vijayan, Karunaas and Ramesh Khanna appear in other significant roles, while Vidyasagar composed the score and soundtrack for the film.
It opened to positive reviews and became a major box office success among Deepavali releases of 2002, with Ajith's performance leading to his second Filmfare Award for Best Actor.

Poovellam Un Vaasam is a 2001 Tamil film directed by Ezhil and produced by Venu Ravichandran, starring Ajith Kumar and Jyothika in leading roles. Nagesh, Sivakumar, Sayaji Shinde, Vivek also appear in supporting roles while Yukta Mookhey appeared in a solo item number. It was released in August 2001 to critical acclaim and commercial success.

Uyirodu Uyiraga

 Uyirodu Uyiraga (Tamil: உயிரோடு உயிராக) is a 1998 Tamil film directed by Sushma Ahuja starring Ajith Kumar and Richa Ahuja in the main roles. The film which told the tale of a couple's struggle to deal with terminal illness, had a successful music soundtrack composed by Vidyasagar. The film was released in November 1998 to positive reviews, but fared poorly commercially.