Director James Cameron wowed the world with "Titanic" back in 1997. And now he plans to do it again with his upcoming film "Avatar," which hits screens around the world in December this year. "Avatar" is one of the most expensive Hollywood films to date and uses a blend of 3D live animation and motion capture to bring the on-screen adventures to life. To promote the film, a 3D trailer has been showing in countries across the globe. India happens to be one of them and some B-town stars showed up for this special screening. Check out the pics from the event below and drop off your comments!