Moviegoers to get sneak peek of 3D Avatar footage

Moviegoers to get sneak peek of 3D Avatar footage | Entertainment | Reuters: "To stoke buzz for the sci-fi flick 'Avatar,' 20th Century Fox will take over as many Imax and 3D screens around the world as it can on August 21 to show 15 minutes of promotional footage, filmmaker James Cameron announced Thursday at the Comic-Con pop culture convention."