The infamous rivalry between the two superstars of Bollywood- Aamir and Shah Rukh- is once again hogging the limelight with the former revealing that King Khan is ‘scared’ to work with him.On the eve of the release of 'Ghajini,' starring Aamir Khan, the actor says he has no qualms about working with Shah Rukh, however the actor kept saying no."SRK is scared to work with me, what to do?" Aamir said.The Khans were supposed to work together for director Rajkumar Santoshi who was apparently writing a script for both of them.Even director Mansoor Ali Khan and Aamir's cousin wanted to make 'Josh' starring both the Khans but apparently Shah Rukh had disagreed."He (Shah Rukh) kept saying no," said Aamir.However the perfectionist actor Aamir said that he and Shah Rukh might work together in future if there is a good script."If something interesting comes up and if the script is nice and both of us like our roles, I don't see a problem!" he said.The Khans were embroiled in a tug-of-war earlier in 2008 with Aamir revealing on his blog that he had named his pet dog as Shah Rukh.Meanwhile, Shah Rukh Khan had in a public function in Mumbai recently claimed that he was currently the biggest brand in the country and there was no other brand bigger than him.Now as the year ends the rivalry between the Khans has once again become the talk of the town as Shah Rukh's 'Rab Ne Bana De Jodi' which released recently is pitted against Aamir Khan's 'Ghajini' that will hit theatres on Christmas Day."Last time I met SRK, he was mentioning that we should do a film together and I said 'Ya, sure!' And he said, 'No, no. I am not joking. We have to sit down and work out what we are doing together.' I said 'Ya, ya we will, let us find a script first. So let's see if something comes up," adds the superstar who has given innumerable blockbusters like 'Lagaan' and 'Rang De Basanti.'Shah Rukh's "Rab Ne Bana De Jodi," released on November 12 was reported to have received a good opening.However the question of finally who among the two Khans rule the box-office would be clear once Aamir's 'Ghajini' releases.About his latest film Aamir admits that it is a typical Bollywood potboiler and as an audience he found the film very exciting."When I saw the film I found It very exciting. I mean as an audience I was like Wow! Screenplay was really exciting. It's a very strong film emotionally. I still hadn't decided whether I would do the film or not because I had a feeling it's not my type of film," he said.Always known to be take up unusual roles Aamir felt 'Ghajini' pushed his limits as an actor."I feel it's good to challenge yourself! It's good to surprise people and yourself. Do something that is unexpected," the superstar said.A R Murugadoss the director of 'Ghajini' had earlier made the film in Tamil where south superstar Suriya essayed the role that Aamir plays of in the Hindi version.