The 61-year-old actor took to Twitter to thank his fans and the crew, who made his directorial venture possible.
"Touched by Hey Ram fans celebrating 16 yrs. Remember all who made it possible. Especially Shah Rukh Khan and Bharat Shah," he tweeted.
Haasan also remembered actor Mohan Gokhale, who died during the shooting of the film. Atul Kulkarni was roped in to play his role.
"Mohan Ghokale. After sculpting Abhyankar beyond my expectation died. I Reshot with Atul K, who won the national award.. Thanks to Mrs Ghokle."
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"One day I wish to showcase late Mohan Gokhale's performance for all to see. A day before he died I told him he might win awards for his role... He died after completing 90 per cent of his work. Loved MG."
Legendary composer Ilayaraja had composed the music for the film, which was simultaneously made in Tamil and Hindi.
"The happier note to making of 'Hey Ram' came from Ilayaraja, who rescued the music of 'Hey Ram' from wrong hands. A case study in film scoring," Haasan tweeted.