Legendary Tamil filmmaker and actor K Bhagyaraj, known for his subtle humour and witty dialogues, well connecting with the audience, died on Saturday following a cardiac arrest, a source in the hospital where he was admitted said.Bhagyaraj was 73-year-old. A towering figure in Tamil cinema. He left behind a rich legacy as an actor, writer, director and producer.His roles, mostly drawn from the middle class, held a charm as his exquisite screenplay combined with his on-screen persona.In a career spanning over five decades, Bhagyaraj gave numerous hits, and some of his celebrated directorial and action works include – Andha 7 naatkal, Mundhanai Mudichu, Chinna Veedu, and Enga Chinna Rasa.