Ra.One is an upcoming 2011 Hindi science-fiction superhero film directed by Anubhav Sinha,starring Shahrukh Khan,Kareena Kapoor and Arjun Rampal in the lead roles. It also stars Shahana Goswami,Dilip Tahil and Chinese-American actor Tom Wu in supporting roles. The film is produced under Khan's production company Red Chillies Entertainment. Originally scheduled to release in the summer of 2011,the release of Ra.One was pushed back due to extensive post-production work involving special effects and its 3D conversion. Ra.One is now set for release during the Diwali weekend of October 26,2011 in both 2D and 3D formats.