Rajinikanth entry video in Shahrukhan's Ra.One movie

http://www.youtube.com/watch?v=RazY-c6gY6M

A scene where Rajinikanth appears as Chitti from 'Endhiran -The Robot' to save Shahrukh Khan and Kareena Kapoor from a gang of goons.Definitely looks fake.Not sure though,What do you think guys?