Idharkuthane Aasaipattai Balakumara () also referred to as iDhaaba, is a 2013 Indian Tamil-language romantic comedy film, written and directed by Gokul. Produced by Leo Visions, the film stars Vijay Sethupathi, Ashwin, Swathi, Nandita, and Pasupathy. It was released on 2 October 2013, and became a success. The film was remade in Kannada as Jackson (2015).
Kumaravel is a lower middle-class youth who mainly lives in TASMAC bars. His friends and neighbours have nicknamed him "Sumaar Moonji Kumar" () alias SMK. Kumar stalks Kumudha, a girl named Kumudhu living opposite his flat. Kumudha's father Shanmugam has sought the help of Annachi, the local boss of a wine shop, to find a solution and teach SMK a lesson. On a parallel track, another alcoholic named Balakrishnan Gopalsamy is a bank salesperson who is always under pressure from his boss Poochandi and possessive girlfriend Renu. One night, the lives of Bala and Kumar get entangled, when Bala accidentally hits a pregnant lady whilst he was drunk and Bala with the help of his friends and Renu take the pregnant lady to the hospital and learn from the doctors that the only way the doctors can save the lady is if they bring a blood donor who has the same blood type as her. They learn that only Kumar has that same blood type and search out to find him. Whilst Kumar is still arguing with Shanmugam and Annachi on whether Kumudha likes him or not and Annachi later calls Kumudha through Shanmugam's phone to ask her whether she would marry Kumar or not to which she says that she does not like Kumar and that he is just bothering her, Annachi then has his henchmen beat Kumar up.
In February 2013, the film was announced to be produced by Leo Visions and to feature Vijay Sethupathi, Nandita and Swathi. Madhan Karky penned the dialogues. Ashwin Kakumanu joined the cast a month later. The film began production after a puja held on 11 March 2013. The title of the film was inspired by a line in Thanga Padhumai (1959). A part of the film was shot in Osaka, and another in Kobe.
The soundtrack album was composed by Siddharth Vipin who earlier composed background score for Naduvula Konjam Pakkatha Kaanom and this is his full-fledged debut as music composer. The lyrics were penned by Madhan Karky and Lalithanand. The single, "Prayer Song" was released on 12 August 2013. It was an instant hit garnering lakhs of views. The song was believed to have been inspired by Jaron and the Long Road to Love's "Pray for You" which Madhan Karky denied, concluding that both songs only had the same concept. The chorus of the song "En Veetula" samples the Jab Pyar Kisi Se Hota Hai song "Sau Saal Pehle".
The complete album was released on 30 August 2013 at Sathyam Cinemas. The album was released by Jiiva in the presence of Balaji Sakthivel and received by the film cast. The album consists of three tracks composed by Siddharth Vipin and an additional track by Ved Shankar.
Idharkuthane Aasaipattai Balakumara was released on 2 October 2013, in nearly 200 screens in Tamil Nadu.
The film had 100% occupancy on first day, collecting which was the biggest opening for a Sethupathi film to that point.
M. Suganth of The Times of India gave 3.5 out of 5 stars and wrote the film "lacks the sophistication of a Soodhu Kavvum or Pizza but makes up for it in sheer likeability". Suganth added, "His debut Rowthiram was an uneven effort but in Idhaaba, Gokul is more surefooted, deftly weaving plotlines and confidently untying the knots in his script". IANS gave 3.5 out of 5 and wrote Idharkuthane Aasaipattai Balakumara (IAB) doesn't merely entertain, but also addresses a domestic issue with a very strong dose of humour. It's undoubtedly one of the smartest yet funniest Tamil films in recent times. S. Saraswathi of Rediff.com gave 3 out of 5 stars, wrote "Director Gokul in his film, Idharkuthane Aasaipattai Balakumara has created some weird, quirky and offbeat characters in hilarious situations who keep the audience entertained, writes" and called it a "laugh riot". In contrast, Baradwaj Rangan wrote for The Hindu, "Gokul's Idharkuthane Aasaipattai Balakumara isn't a lazy movie. It is, in fact, the opposite. There's too much of everything â too much plot, too much mood, with three narrative strands infused with three unique sensibilities". He concluded that the film provided "Some mild laughs" and "Lots of tedium".
A spin-off titled Corona Kumar entered development in 2020 before being stalled. The dialogue "Kumudha happy, Annachi" was parodied in Test (2025) by R. Madhavan's character.