Uttam Kumar (Bangla: উত্তম কুমার ) (3 September 1926 - 24 July 1980) born as Arun Kumar Chatterjee; was a legendary Bengali actor. He is fondly called the Mahanayak or the \"Great Hero\" of Bengali cinema. He was born Arun Kumar Chatterjee on 3 September 1926 in Kolkata. He had been an actor, director and producer. Apart from acting in two films with Satyajit Ray, Nayak (The Hero) and Chiriyakhana (The Zoo, a thriller written by Sharadindu Bandyopadhyay, in which he played the famous Bengali detective Byomkesh Bakshi), he has acted in some Hindi films like \"Chhoti si Mulaqat\" (with Vyjayantimala Bali), \"Amanush\" (with Sharmila Tagore), \"Ananda Ashram\" (with Sharmila Tagore), \"Kitaab\" and \"Dooriyan\".
Which bollywood actress has the most beautiful smile?