New Delhi, March 20 -- Genre tributes are a tricky balancing act. Tip one way and you end up parodying the thing you love. Tip to the other side and you have something that's all flash and no heart. With Mard Ko Dard Nahi Hota, Vasan Bala manages something rare: a delirious pastiche with a heartbeat. It's a tribute to the martial arts movies of the 1970s and '80s that Bala grew up on, but refracted through the prism of Hindi and Tamil commercial cinema and middle-class Mumbai. It's also a story about the tug and torment of families, no less moving for being delivered with a wink....