S. Krishnamoorthy (born 9 October), better known by his screenname Madhan Bob, is a popular comedianand Tamil film actor from Chennai, Tamil Nadu, India. He started his film career as a musician and became an actor instead. Apart from appearing in supporting roles in Tamil films he also appears in the Sun TV comedy show Asathapovathu Yaaru as one of the judges. His debut film was Vaaname Ellai. It was Madan Bob who first taught Maragathamani musiCHe was eighth child in his family, so he was named Krishnamurthy which also happened to be his uncle’s name and there was a lot of confusion in the house, so they changed his name to Madan. his brother’s name is Padmanabhan a.k.a. Babu. Both started a music group called ‘Madan and Babu’. In time, the Babu became Bob and that’s how director Balachander introduced him in his first film.During the shooting of Mappillai (2011), Madhan Bob was injured in an accident. His assistant was also with him. When the car was nearing Vaagai Kulam a dog crossed the road. In order to avoid hitting the dog, the driver applied a sudden brake. Because of this the car capsized. Madan Bob, his assistant and car driver were seriously injured. Madan Bob somehow managed to break the glass door. He saved the driver and his assistant. The three were taken to a nearby hospital for treatment. After the treatment Madan Bob participated in the shooting.