Shah Rukh Khan knows his marketing tricks well — and he proved it when he greeted and interacted with his fans in Bengaluru, drawing a huge approving roar.The 45-year-old spoke in Kannada much to the delight of his fans. Khan started his speech by greeting his fans with a \"Namaskaara\" [greetings].He also said in Kannada Bengaluru Chennagidhe [Bengaluru is a beautiful city], Oota Aayitha? [Had your lunch?] and Chennagidhdheera [How are you, are you okay?].Though he didn\'t speak much about the film, he entertained the public by grooving to the catchy tunes of RA.One song Chammak challo.Khan said Rajinikanth will play the role of Chitti in RA.One — the same character that he played in the Shankar-directed Tamil film Endhiran.Khan also talked about the cameos by Sanjay Dutt and Priyanka Chopra.\"I wanted both Khalnayak [Dutt\'s hit film] and Desi Girl [a song from Chopra\'s movie Dostana] to be part of my film. That is why they are part of the film,\" he said.