Eiyarkai (pronunciation (help·info)) (English translation: Nature) is a 2003 Tamil romance film written and directed by S. P. Jananathan and produced by V. R. Kumar, A. E. Gunasekaran, and G. Natarajan for Prisam Films. The film has Shaam and Kutty Radhika in the lead roles with Arun Kumar in a special appearance. This film was a low-budget production, and the soundtrack was composed by Vidyasagar. This love story is set against the backdrop of a lost ship in the port town of Rameshwaram and revolves around a girl and the two men that love her. This movie is loosely based on Vennira Iravugal, Tamil translation of Dostoyevsky's White Nights.
|Produced by||V. R. Kumar|
|Written by||S. P. Jananathan|
(Story & Dialogue)
|Screenplay by||N. Kalyanakrishnan|
|Edited by||N. Ganesh Kumar|
V. T. Vijayan
|Distributed by||Prisam Films|
Mukundan (Arun Kumar) is an Indian ship captain who lives in Rameshwaram. Marudhu (Shaam), an orphaned ship mechanic and sailor, also lives in Rameswaram and decides to give up his sailing life and settle down there. He develops a liking for Nancy (Kutty Radhika), who sells fruits and other items to sailors on ships that have arrived at the port, but she still holds a candle for the captain of a ship that docked there three years ago. Though Nancy had proposed to him three years ago, he declined stating that 17 was a very young age to marry. To everyone's surprise, the captain is revealed to be Mukundan. He had promised her that he would return in a year, but three years later, Nancy has still not given up hope. Marudhu helps Nancy search for Mukundan, but when he reveals that he loves Nancy, she distances herself from him. They reconcile and become friends. All hope is lost to find Mukundan as they see the captain junior, now as the first officer of another ship. The captain junior reveals that the captain's ship was destroyed in a blast. Soon, Marudhu's ship is scheduled to leave to Africa on Christmas night. Marudhu can decide to join or leave by then. All of them pressurize Nancy to leave her ideas about Mukundan and marry Marudhu. After a very long thought, she agrees by the night of Christmas Eve, and arrangements are made for the wedding next day, but Mukundan returns, surprises Nancy and Marudhu, and finds him kissing her hand in the crowd. He decides that he is the best for her. She is in a dilemma whether to choose Mukundan or Marudhu, and finally selects the former, leaving mixed feelings of joy and sorrow. Marudhu leaves India in his ship, seeking more journeys and promising never to return to his home of Tamil Nadu.
- Shaam as Marudhu
- Arun Kumar as Mukundan (in a special appearance)
- Kutty Radhika as Nancy Mukundan (Voice dubbed by Deepa Venkat)
- Seema Biswas as Mercy, Nancy's sister-in-law (Voice dubbed by Anuradha Sriram)
- Chinni Jayanth as Vijay, Marudhu's guide
- Karunas as Nandu, Marudhu's friend
- Pasupathy as Priest Fernandez
- Senthil as Senthil Aandavan
- Crane Manohar as Magician
- T. P. Gajendran as Comic Leader
In 2001, debutant S. P. Jananathan selected Shaam to be the lead actor in his first film titled Eiyarkai after watching his performance in the film 12B before the film had even released. Shaam joined the film after he had finished filming for Girivalam. 
|Soundtrack album by|
|Recorded||Varsha Vallaki Studios|
|Genre||Feature film Soundtrack|
|"Pazhaya Kural"||Sujatha Mohan|
|"Eiyarkai Thaaye"||Karthik, Srivarthini|
|"Kaadhal Vandhaal"||Tippu, Manikka Vinayagam|
|"Alaiye Alaiye"||Shankar Mahadevan|
|"Seetu Kattu"||Karthik, Manikka Vinayagam|
— Shaam in an interview 
It enjoyed relative success in the Kollywood box office. The soundtrack was a great hit. Most importantly, the film won the National Film Award for Best Feature Film in Tamil for 2003, competing with Virumaandi and Pithamagan as that year's submissions.  S. P. Jananathan collaborated with Shaam again for the latter's 25th film titled Purampokku Engira Podhuvudamai in 2015. 
- Rangarajan, Malathi (2003). "Iyarkai". The Hindu. Retrieved 24 June 2019.
- "Honour well deserved". The Hindu. 27 August 2004. Retrieved 19 June 2019.
- Raghavan, Nikhil (14 February 2015). "Etcetera: Woman power". The Hindu. Retrieved 19 June 2019.
- "51st National Film Awards" (PDF). Directorate of Film Festivals. Retrieved 24 June 2019.
- Gopinath, Avinash (19 May 2015). "Purampokku Engira Podhuvudamai Movie Review: Justice To 'Bhagat Singh' Like Heroes". Retrieved 24 June 2019.