Director Alfonso Cuarón explains his passion for outer space and his approach to 3D in a featurette for Gravity. Star Sandra Bullock (Dr. Ryan Stone), producer David Heyman and several other crew members break down the 3D aspects of this highly-anticipated thriller, which follows two astronauts as they somehow try to find a way back home while drifting aimlessly through space. In addition, we have the latest TV spot. Gravity is in theaters October 4.