By contrast, in 2006, Ajith acted 3 projects, Paramasivan[17] directed P.Vasu, Thirupathi[18] directed by Perarasu and particularly Varalaru directed by K. S. Ravikumar. This is his comeback movie since Villain. Varalaru emerged as a successful film. In Paramasivan Ajith looked back to his best fatigue again and played a prisoner in jail and a secret agent. Paramasivan gave Ajith the much needed lift to be amongst the bigger heroes of Kollywood. Now he was desperate to continue his form with Thirupathi. Thirupathi saw a brand new Ajith, he played a role the would have normally been played by his peer Vijay. He answered his critics with the movie where he improved his dancing and pronunciation of speech. Thirupathi did well but more importantly got a better actor out of Ajith. Ajith's final film of the year Varalaru was his biggest hit of his career. He donned a triple role playing a father and two sons. The role got him a Filmfare award for best actor 2007.
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Ajith and Nayanthara in the movie Billa
Ajith's first film in 2007 was with the newcomer director Chella entitled Aalwar. Both Varalaru and Aalwar were opposite Asin. Aalwar did not live up the expectations created by the success of Varalaru, as a result it was another major let down for Ajith. After Aalwar, Ajith acted ina remake of a 1989 National Award winning Mohanlal classic, entitled Kireedam opposite Trisha Krishnan. The film was produced by Anil Ambani's conglomerate Adlabs Films and will mark their entry into Kollywood. Ajith sustained a recurring spinal injury on the sets of the film.[19] Kireedam went on to become a good hit for Ajith and won him many praise and fans for acting in such an emotional and different film.
In November 2007, Ajith is set to release Billa. The film is a remake of Rajinikanth's 1980 Tamil film Billa which itself was a remake of Amitabh Bachan's 1978 Hindi film Don which in turn was remade by Shah Rukh Khan in 2006 as Don again.[20]. The film is directed by Vishnuvardhan and the expectations are high on this film with Nayanthara,Namitha and Rose Dawn paired with Ajith for the first time. After Billa, Ajith is set to act in Akbar directed by Raju Sundaram. Ajith is set to start filming for the film from January 2008, possibly for a June 2008 release.