By now its common knowledge that Shah Rukh Khan and Arjun Rampal are close friends. The duo have starred together in super-hit films like Don and Om Shanti Om. Shah Rukh even made a fleeting appearance in Arjun’s home production I See You that released a few years ago. Now SRK and Arjun Rampal will once again be seen together in Shah Rukh’s home production Ra.1 to be directed by Anubhav Sinha. While Shah Rukh plays a super-hero kind of a character in the film, the buzz is that Arjun will be playing his nemesis. The sci-fi film which is expected to go on floors very soon features Kareena Kapoor as the female lead.