Aamir Khan's Dhoom:3 trailer that released on October 30 is creating quite a buzz online. The video has already got 3,476,353 views in 3 days of its release.Aamir, who'd be seen in a full-fledged negative role for the first time, impresses with his bike stunts and 'scary joker' act. 'Hats' off to him! Katrina Kaif's acrobatics make for an interesting watch. The lady seems to have worked hard for the movie. Abhishek Bachchan and Uday Chopra also star in the Yash Raj movie.The third installment of the Dhoom franchise has been directed by Vijay Krishna Acharya and will hit the theatres on December 20, 2013.